diff --git a/dev/main.c b/dev/main.c
index 93cc706..1ca7e48 100644
--- a/dev/main.c
+++ b/dev/main.c
@@ -176,7 +176,7 @@ int main()
 {
 SPVector2 vector;
 
-sp_vector2_set(0, 0, &vector);
+sp_vector2_set_values(0, 0, &vector);
 
 printf("SPVector2(%f, %f), module = %d\n",
     vector.x1,
diff --git a/src/geometry.h b/src/geometry.h
index ecb9e4b..80740bb 100644
--- a/src/geometry.h
+++ b/src/geometry.h
@@ -8,9 +8,10 @@
 #include "vector2.h"
 #include "vector3.h"
 
-#include "matrixes.h"
-#include "matrix2x2.h"
-#include "matrix2x3.h"
+#include "matrixes.h"
+#include "matrix2x2.h"
+#include "matrix2x3.h"
+#include "matrix3x2.h"
 #include "matrix3x3.h"
 
 #include "rotation3.h"
diff --git a/src/geometry.vcxproj b/src/geometry.vcxproj
index 7fed42e..f211274 100644
--- a/src/geometry.vcxproj
+++ b/src/geometry.vcxproj
@@ -23,7 +23,10 @@
     <ClInclude Include="basis.h" />
     <ClInclude Include="geometry.h" />
     <ClInclude Include="matrix2x2.h" />
+    <ClInclude Include="matrix2x3.h" />
+    <ClInclude Include="matrix3x2.h" />
     <ClInclude Include="matrix3x3.h" />
+    <ClInclude Include="matrixes.h" />
     <ClInclude Include="quaternion.h" />
     <ClInclude Include="rotation3.h" />
     <ClInclude Include="versor.h" />
@@ -34,7 +37,10 @@
     <ClCompile Include="angle.c" />
     <ClCompile Include="basis.c" />
     <ClCompile Include="matrix2x2.c" />
+    <ClCompile Include="matrix2x3.c" />
+    <ClCompile Include="matrix3x2.c" />
     <ClCompile Include="matrix3x3.c" />
+    <ClCompile Include="matrixes.c" />
     <ClCompile Include="quaternion.c" />
     <ClCompile Include="rotation3.c" />
     <ClCompile Include="versor.c" />
diff --git a/src/geometry.vcxproj.filters b/src/geometry.vcxproj.filters
index b851ec4..45cc321 100644
--- a/src/geometry.vcxproj.filters
+++ b/src/geometry.vcxproj.filters
@@ -45,6 +45,15 @@
     <ClInclude Include="quaternion.h">
       <Filter>Файлы заголовков</Filter>
     </ClInclude>
+    <ClInclude Include="matrix2x3.h">
+      <Filter>Файлы заголовков</Filter>
+    </ClInclude>
+    <ClInclude Include="matrix3x2.h">
+      <Filter>Файлы заголовков</Filter>
+    </ClInclude>
+    <ClInclude Include="matrixes.h">
+      <Filter>Файлы заголовков</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="angle.c">
@@ -74,5 +83,14 @@
     <ClCompile Include="quaternion.c">
       <Filter>Исходные файлы</Filter>
     </ClCompile>
+    <ClCompile Include="matrixes.c">
+      <Filter>Исходные файлы</Filter>
+    </ClCompile>
+    <ClCompile Include="matrix2x3.c">
+      <Filter>Исходные файлы</Filter>
+    </ClCompile>
+    <ClCompile Include="matrix3x2.c">
+      <Filter>Исходные файлы</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/matrix2x3.c b/src/matrix2x3.c
new file mode 100644
index 0000000..8f2f3f6
--- /dev/null
+++ b/src/matrix2x3.c
@@ -0,0 +1,149 @@
+#include "matrix2x3.h"
+
+// ============= Weighed Sum of two ============= //
+
+void sp_matrix2x3_get_weighted_sum2(
+    const float weight1, const SPMatrix2x3* matrix1,
+    const float weight2, const SPMatrix2x3* matrix2,
+    SPMatrix2x3* sum
+)
+{
+    sum->r1c1 = matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2;
+    sum->r1c2 = matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2;
+
+    sum->r2c1 = matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2;
+    sum->r2c2 = matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2;
+
+    sum->r3c1 = matrix1->r3c1 * weight1 + matrix2->r3c1 * weight2;
+    sum->r3c2 = matrix1->r3c2 * weight1 + matrix2->r3c2 * weight2;
+}
+
+void dp_matrix2x3_get_weighted_sum2(
+    const double weight1, const DPMatrix2x3* matrix1,
+    const double weight2, const DPMatrix2x3* matrix2,
+    DPMatrix2x3* sum
+)
+{
+    sum->r1c1 = matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2;
+    sum->r1c2 = matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2;
+
+    sum->r2c1 = matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2;
+    sum->r2c2 = matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2;
+
+    sum->r3c1 = matrix1->r3c1 * weight1 + matrix2->r3c1 * weight2;
+    sum->r3c2 = matrix1->r3c2 * weight1 + matrix2->r3c2 * weight2;
+}
+
+// ============ Weighed Sum of three ============ //
+
+void sp_matrix2x3_get_weighted_sum3(
+    const float weight1, const SPMatrix2x3* matrix1,
+    const float weight2, const SPMatrix2x3* matrix2,
+    const float weight3, const SPMatrix2x3* matrix3,
+    SPMatrix2x3* sum
+)
+{
+    sum->r1c1 = matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2 + matrix3->r1c1 * weight3;
+    sum->r1c2 = matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2 + matrix3->r1c2 * weight3;
+
+    sum->r2c1 = matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2 + matrix3->r2c1 * weight3;
+    sum->r2c2 = matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2 + matrix3->r2c2 * weight3;
+
+    sum->r3c1 = matrix1->r3c1 * weight1 + matrix2->r3c1 * weight2 + matrix3->r3c1 * weight3;
+    sum->r3c2 = matrix1->r3c2 * weight1 + matrix2->r3c2 * weight2 + matrix3->r3c2 * weight3;
+}
+
+void dp_matrix2x3_get_weighted_sum3(
+    const double weight1, const DPMatrix2x3* matrix1,
+    const double weight2, const DPMatrix2x3* matrix2,
+    const double weight3, const DPMatrix2x3* matrix3,
+    DPMatrix2x3* sum
+)
+{
+    sum->r1c1 = matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2 + matrix3->r1c1 * weight3;
+    sum->r1c2 = matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2 + matrix3->r1c2 * weight3;
+
+    sum->r2c1 = matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2 + matrix3->r2c1 * weight3;
+    sum->r2c2 = matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2 + matrix3->r2c2 * weight3;
+
+    sum->r3c1 = matrix1->r3c1 * weight1 + matrix2->r3c1 * weight2 + matrix3->r3c1 * weight3;
+    sum->r3c2 = matrix1->r3c2 * weight1 + matrix2->r3c2 * weight2 + matrix3->r3c2 * weight3;
+}
+
+// ============ Weighed Sum of four ============= //
+
+void sp_matrix2x3_get_weighted_sum4(
+    const float weight1, const SPMatrix2x3* matrix1,
+    const float weight2, const SPMatrix2x3* matrix2,
+    const float weight3, const SPMatrix2x3* matrix3,
+    const float weight4, const SPMatrix2x3* matrix4,
+    SPMatrix2x3* sum
+)
+{
+    sum->r1c1 = (matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2) + (matrix3->r1c1 * weight3 + matrix4->r1c1 * weight4);
+    sum->r1c2 = (matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2) + (matrix3->r1c2 * weight3 + matrix4->r1c2 * weight4);
+
+    sum->r2c1 = (matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2) + (matrix3->r2c1 * weight3 + matrix4->r2c1 * weight4);
+    sum->r2c2 = (matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2) + (matrix3->r2c2 * weight3 + matrix4->r2c2 * weight4);
+
+    sum->r3c1 = (matrix1->r3c1 * weight1 + matrix2->r3c1 * weight2) + (matrix3->r3c1 * weight3 + matrix4->r3c1 * weight4);
+    sum->r3c2 = (matrix1->r3c2 * weight1 + matrix2->r3c2 * weight2) + (matrix3->r3c2 * weight3 + matrix4->r3c2 * weight4);
+}
+
+void dp_matrix2x3_get_weighted_sum4(
+    const double weight1, const DPMatrix2x3* matrix1,
+    const double weight2, const DPMatrix2x3* matrix2,
+    const double weight3, const DPMatrix2x3* matrix3,
+    const double weight4, const DPMatrix2x3* matrix4,
+    DPMatrix2x3* sum
+)
+{
+    sum->r1c1 = (matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2) + (matrix3->r1c1 * weight3 + matrix4->r1c1 * weight4);
+    sum->r1c2 = (matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2) + (matrix3->r1c2 * weight3 + matrix4->r1c2 * weight4);
+
+    sum->r2c1 = (matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2) + (matrix3->r2c1 * weight3 + matrix4->r2c1 * weight4);
+    sum->r2c2 = (matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2) + (matrix3->r2c2 * weight3 + matrix4->r2c2 * weight4);
+
+    sum->r3c1 = (matrix1->r3c1 * weight1 + matrix2->r3c1 * weight2) + (matrix3->r3c1 * weight3 + matrix4->r3c1 * weight4);
+    sum->r3c2 = (matrix1->r3c2 * weight1 + matrix2->r3c2 * weight2) + (matrix3->r3c2 * weight3 + matrix4->r3c2 * weight4);
+}
+
+// ============ Weighed Sum of five ============= //
+
+void sp_matrix2x3_get_weighted_sum5(
+    const float weight1, const SPMatrix2x3* matrix1,
+    const float weight2, const SPMatrix2x3* matrix2,
+    const float weight3, const SPMatrix2x3* matrix3,
+    const float weight4, const SPMatrix2x3* matrix4,
+    const float weight5, const SPMatrix2x3* matrix5,
+    SPMatrix2x3* sum
+)
+{
+    sum->r1c1 = (matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2) + (matrix3->r1c1 * weight3 + matrix4->r1c1 * weight4) + matrix5->r1c1 * weight5;
+    sum->r1c2 = (matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2) + (matrix3->r1c2 * weight3 + matrix4->r1c2 * weight4) + matrix5->r1c2 * weight5;
+
+    sum->r2c1 = (matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2) + (matrix3->r2c1 * weight3 + matrix4->r2c1 * weight4) + matrix5->r2c1 * weight5;
+    sum->r2c2 = (matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2) + (matrix3->r2c2 * weight3 + matrix4->r2c2 * weight4) + matrix5->r2c2 * weight5;
+
+    sum->r3c1 = (matrix1->r3c1 * weight1 + matrix2->r3c1 * weight2) + (matrix3->r3c1 * weight3 + matrix4->r3c1 * weight4) + matrix5->r3c1 * weight5;
+    sum->r3c2 = (matrix1->r3c2 * weight1 + matrix2->r3c2 * weight2) + (matrix3->r3c2 * weight3 + matrix4->r3c2 * weight4) + matrix5->r3c2 * weight5;
+}
+
+void dp_matrix2x3_get_weighted_sum5(
+    const double weight1, const DPMatrix2x3* matrix1,
+    const double weight2, const DPMatrix2x3* matrix2,
+    const double weight3, const DPMatrix2x3* matrix3,
+    const double weight4, const DPMatrix2x3* matrix4,
+    const double weight5, const DPMatrix2x3* matrix5,
+    DPMatrix2x3* sum
+)
+{
+    sum->r1c1 = (matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2) + (matrix3->r1c1 * weight3 + matrix4->r1c1 * weight4) + matrix5->r1c1 * weight5;
+    sum->r1c2 = (matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2) + (matrix3->r1c2 * weight3 + matrix4->r1c2 * weight4) + matrix5->r1c2 * weight5;
+
+    sum->r2c1 = (matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2) + (matrix3->r2c1 * weight3 + matrix4->r2c1 * weight4) + matrix5->r2c1 * weight5;
+    sum->r2c2 = (matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2) + (matrix3->r2c2 * weight3 + matrix4->r2c2 * weight4) + matrix5->r2c2 * weight5;
+
+    sum->r3c1 = (matrix1->r3c1 * weight1 + matrix2->r3c1 * weight2) + (matrix3->r3c1 * weight3 + matrix4->r3c1 * weight4) + matrix5->r3c1 * weight5;
+    sum->r3c2 = (matrix1->r3c2 * weight1 + matrix2->r3c2 * weight2) + (matrix3->r3c2 * weight3 + matrix4->r3c2 * weight4) + matrix5->r3c2 * weight5;
+}
diff --git a/src/matrix2x3.h b/src/matrix2x3.h
index ef7eead..36a569d 100644
--- a/src/matrix2x3.h
+++ b/src/matrix2x3.h
@@ -37,15 +37,12 @@ static inline void sp_matrix2x3_copy(const SPMatrix2x3* from, SPMatrix2x3* to)
 {
     to->r1c1 = from->r1c1;
     to->r1c2 = from->r1c2;
-    to->r1c3 = from->r1c3;
-
+    
     to->r2c1 = from->r2c1;
     to->r2c2 = from->r2c2;
-    to->r2c3 = from->r2c3;
 
     to->r3c1 = from->r3c1;
     to->r3c2 = from->r3c2;
-    to->r3c3 = from->r3c3;
 }
 
 static inline void dp_matrix2x3_copy(const DPMatrix2x3* from, DPMatrix2x3* to)
@@ -138,4 +135,280 @@ static inline void dp_matrix2x3_transpose_single(const SPMatrix3x2* from, DPMatr
     to->r3c2 = from->r2c3;
 }
 
+// ================= Set Row 1 ================== //
+
+static inline void sp_matrix2x3_set_row1(const float c1, const float c2, SPMatrix2x3* matrix)
+{
+    matrix->r1c1 = c1;
+    matrix->r1c2 = c2;
+}
+
+static inline void dp_matrix2x3_set_row1(const double c1, const double c2, DPMatrix2x3* matrix)
+{
+    matrix->r1c1 = c1;
+    matrix->r1c2 = c2;
+}
+
+// ================= Set Row 2 ================== //
+
+static inline void sp_matrix2x3_set_row2(const float c1, const float c2, SPMatrix2x3* matrix)
+{
+    matrix->r2c1 = c1;
+    matrix->r2c2 = c2;
+}
+
+static inline void dp_matrix2x3_set_row2(const double c1, const double c2, DPMatrix2x3* matrix)
+{
+    matrix->r2c1 = c1;
+    matrix->r2c2 = c2;
+}
+
+// ================= Set Row 3 ================== //
+
+static inline void sp_matrix2x3_set_row3(const float c1, const float c2, SPMatrix2x3* matrix)
+{
+    matrix->r3c1 = c1;
+    matrix->r3c2 = c2;
+}
+
+static inline void dp_matrix2x3_set_row3(const double c1, const double c2, DPMatrix2x3* matrix)
+{
+    matrix->r3c1 = c1;
+    matrix->r3c2 = c2;
+}
+
+// ================ Set Column 1 ================ //
+
+static inline void sp_matrix2x3_set_column1(const float r1, const float r2, const float r3, SPMatrix2x3* matrix)
+{
+    matrix->r1c1 = r1;
+    matrix->r2c1 = r2;
+    matrix->r3c1 = r3;
+}
+
+static inline void dp_matrix2x3_set_column1(const double r1, const double r2, const double r3, DPMatrix2x3* matrix)
+{
+    matrix->r1c1 = r1;
+    matrix->r2c1 = r2;
+    matrix->r3c1 = r3;
+}
+
+// ================ Set Column 2 ================ //
+
+static inline void sp_matrix2x3_set_column2(const float r1, const float r2, const float r3, SPMatrix2x3* matrix)
+{
+    matrix->r1c2 = r1;
+    matrix->r2c2 = r2;
+    matrix->r3c2 = r3;
+}
+
+static inline void dp_matrix2x3_set_column2(const double r1, const double r2, const double r3, DPMatrix2x3* matrix)
+{
+    matrix->r1c2 = r1;
+    matrix->r2c2 = r2;
+    matrix->r3c2 = r3;
+}
+
+// ================== Addition ================== //
+
+static inline void sp_matrix2x3_add(const SPMatrix2x3* matrix1, const SPMatrix2x3* matrix2, SPMatrix2x3* sum)
+{
+    sum->r1c1 = matrix1->r1c1 + matrix2->r1c1;
+    sum->r1c2 = matrix1->r1c2 + matrix2->r1c2;
+
+    sum->r2c1 = matrix1->r2c1 + matrix2->r2c1;
+    sum->r2c2 = matrix1->r2c2 + matrix2->r2c2;
+
+    sum->r3c1 = matrix1->r3c1 + matrix2->r3c1;
+    sum->r3c2 = matrix1->r3c2 + matrix2->r3c2;
+}
+
+static inline void dp_matrix2x3_add(const DPMatrix2x3* matrix1, const DPMatrix2x3* matrix2, DPMatrix2x3* sum)
+{
+    sum->r1c1 = matrix1->r1c1 + matrix2->r1c1;
+    sum->r1c2 = matrix1->r1c2 + matrix2->r1c2;
+
+    sum->r2c1 = matrix1->r2c1 + matrix2->r2c1;
+    sum->r2c2 = matrix1->r2c2 + matrix2->r2c2;
+
+    sum->r3c1 = matrix1->r3c1 + matrix2->r3c1;
+    sum->r3c2 = matrix1->r3c2 + matrix2->r3c2;
+}
+
+// ================ Subtraction ================= //
+
+static inline void sp_matrix2x3_subtract(const SPMatrix2x3* minuend, const SPMatrix2x3* subtrahend, SPMatrix2x3* difference)
+{
+    difference->r1c1 = minuend->r1c1 - subtrahend->r1c1;
+    difference->r1c2 = minuend->r1c2 - subtrahend->r1c2;
+
+    difference->r2c1 = minuend->r2c1 - subtrahend->r2c1;
+    difference->r2c2 = minuend->r2c2 - subtrahend->r2c2;
+
+    difference->r3c1 = minuend->r3c1 - subtrahend->r3c1;
+    difference->r3c2 = minuend->r3c2 - subtrahend->r3c2;
+}
+
+static inline void dp_matrix2x3_subtract(const DPMatrix2x3* minuend, const DPMatrix2x3* subtrahend, DPMatrix2x3* difference)
+{
+    difference->r1c1 = minuend->r1c1 - subtrahend->r1c1;
+    difference->r1c2 = minuend->r1c2 - subtrahend->r1c2;
+
+    difference->r2c1 = minuend->r2c1 - subtrahend->r2c1;
+    difference->r2c2 = minuend->r2c2 - subtrahend->r2c2;
+
+    difference->r3c1 = minuend->r3c1 - subtrahend->r3c1;
+    difference->r3c2 = minuend->r3c2 - subtrahend->r3c2;
+}
+
+// =============== Multiplication =============== //
+
+static inline void sp_matrix2x3_multiply(const SPMatrix2x3* multiplicand, const float multiplier, SPMatrix2x3* product)
+{
+    product->r1c1 = multiplicand->r1c1 * multiplier;
+    product->r1c2 = multiplicand->r1c2 * multiplier;
+
+    product->r2c1 = multiplicand->r2c1 * multiplier;
+    product->r2c2 = multiplicand->r2c2 * multiplier;
+
+    product->r3c1 = multiplicand->r3c1 * multiplier;
+    product->r3c2 = multiplicand->r3c2 * multiplier;
+}
+
+static inline void dp_matrix2x3_multiply(const DPMatrix2x3* multiplicand, const double multiplier, DPMatrix2x3* product)
+{
+    product->r1c1 = multiplicand->r1c1 * multiplier;
+    product->r1c2 = multiplicand->r1c2 * multiplier;
+
+    product->r2c1 = multiplicand->r2c1 * multiplier;
+    product->r2c2 = multiplicand->r2c2 * multiplier;
+
+    product->r3c1 = multiplicand->r3c1 * multiplier;
+    product->r3c2 = multiplicand->r3c2 * multiplier;
+}
+
+// ================== Division ================== //
+
+static inline void sp_matrix2x3_divide(const SPMatrix2x3* dividend, const float divisor, SPMatrix2x3* quotient)
+{
+    quotient->r1c1 = dividend->r1c1 / divisor;
+    quotient->r1c2 = dividend->r1c2 / divisor;
+
+    quotient->r2c1 = dividend->r2c1 / divisor;
+    quotient->r2c2 = dividend->r2c2 / divisor;
+
+    quotient->r3c1 = dividend->r3c1 / divisor;
+    quotient->r3c2 = dividend->r3c2 / divisor;
+}
+
+static inline void dp_matrix2x3_divide(const DPMatrix2x3* dividend, const double divisor, DPMatrix2x3* quotient)
+{
+    quotient->r1c1 = dividend->r1c1 / divisor;
+    quotient->r1c2 = dividend->r1c2 / divisor;
+
+    quotient->r2c1 = dividend->r2c1 / divisor;
+    quotient->r2c2 = dividend->r2c2 / divisor;
+
+    quotient->r3c1 = dividend->r3c1 / divisor;
+    quotient->r3c2 = dividend->r3c2 / divisor;
+}
+
+// ============= Weighed Sum of two ============= //
+
+void sp_matrix2x3_get_weighted_sum2(
+    const float weight1, const SPMatrix2x3* matrix1,
+    const float weight2, const SPMatrix2x3* matrix2,
+    SPMatrix2x3* sum
+);
+
+void dp_matrix2x3_get_weighted_sum2(
+    const double weight1, const DPMatrix2x3* matrix1,
+    const double weight2, const DPMatrix2x3* matrix2,
+    DPMatrix2x3* sum
+);
+
+// ============ Weighed Sum of three ============ //
+
+void sp_matrix2x3_get_weighted_sum3(
+    const float weight1, const SPMatrix2x3* matrix1,
+    const float weight2, const SPMatrix2x3* matrix2,
+    const float weight3, const SPMatrix2x3* matrix3,
+    SPMatrix2x3* sum
+);
+
+void dp_matrix2x3_get_weighted_sum3(
+    const double weight1, const DPMatrix2x3* matrix1,
+    const double weight2, const DPMatrix2x3* matrix2,
+    const double weight3, const DPMatrix2x3* matrix3,
+    DPMatrix2x3* sum
+);
+
+// ============ Weighed Sum of four ============= //
+
+void sp_matrix2x3_get_weighted_sum4(
+    const float weight1, const SPMatrix2x3* matrix1,
+    const float weight2, const SPMatrix2x3* matrix2,
+    const float weight3, const SPMatrix2x3* matrix3,
+    const float weight4, const SPMatrix2x3* matrix4,
+    SPMatrix2x3* sum
+);
+
+void dp_matrix2x3_get_weighted_sum4(
+    const double weight1, const DPMatrix2x3* matrix1,
+    const double weight2, const DPMatrix2x3* matrix2,
+    const double weight3, const DPMatrix2x3* matrix3,
+    const double weight4, const DPMatrix2x3* matrix4,
+    DPMatrix2x3* sum
+);
+
+// ============ Weighed Sum of five ============= //
+
+void sp_matrix2x3_get_weighted_sum5(
+    const float weight1, const SPMatrix2x3* matrix1,
+    const float weight2, const SPMatrix2x3* matrix2,
+    const float weight3, const SPMatrix2x3* matrix3,
+    const float weight4, const SPMatrix2x3* matrix4,
+    const float weight5, const SPMatrix2x3* matrix5,
+    SPMatrix2x3* sum
+);
+
+void dp_matrix2x3_get_weighted_sum5(
+    const double weight1, const DPMatrix2x3* matrix1,
+    const double weight2, const DPMatrix2x3* matrix2,
+    const double weight3, const DPMatrix2x3* matrix3,
+    const double weight4, const DPMatrix2x3* matrix4,
+    const double weight5, const DPMatrix2x3* matrix5,
+    DPMatrix2x3* sum
+);
+
+// ============ Left Vector Product ============= //
+
+static inline void sp_matrix2x3_left_product(const SPVector3* vector, const SPMatrix2x3* matrix, SPVector2* result)
+{
+    result->x1 = vector->x1 * matrix->r1c1 + vector->x2 * matrix->r2c1 + vector->x3 * matrix->r3c1;
+    result->x2 = vector->x1 * matrix->r1c2 + vector->x2 * matrix->r2c2 + vector->x3 * matrix->r3c2;
+}
+
+static inline void dp_matrix2x3_left_product(const DPVector3* vector, const DPMatrix2x3* matrix, DPVector2* result)
+{
+    result->x1 = vector->x1 * matrix->r1c1 + vector->x2 * matrix->r2c1 + vector->x3 * matrix->r3c1;
+    result->x2 = vector->x1 * matrix->r1c2 + vector->x2 * matrix->r2c2 + vector->x3 * matrix->r3c2;
+}
+
+// ============ Right Vector Product ============ //
+
+static inline void sp_matrix2x3_right_product(const SPMatrix2x3* matrix, const SPVector2* vector, SPVector3* result)
+{
+    result->x1 = matrix->r1c1 * vector->x1 + matrix->r1c2 * vector->x2;
+    result->x2 = matrix->r2c1 * vector->x1 + matrix->r2c2 * vector->x2;
+    result->x3 = matrix->r3c1 * vector->x1 + matrix->r3c2 * vector->x2;
+}
+
+static inline void dp_matrix2x3_right_product(const DPMatrix2x3* matrix, const DPVector2* vector, DPVector3* result)
+{
+    result->x1 = matrix->r1c1 * vector->x1 + matrix->r1c2 * vector->x2;
+    result->x2 = matrix->r2c1 * vector->x1 + matrix->r2c2 * vector->x2;
+    result->x3 = matrix->r3c1 * vector->x1 + matrix->r3c2 * vector->x2;
+}
+
 #endif
diff --git a/src/matrix3x2.c b/src/matrix3x2.c
new file mode 100644
index 0000000..974e086
--- /dev/null
+++ b/src/matrix3x2.c
@@ -0,0 +1,141 @@
+#include "matrix3x2.h"
+
+// ============= Weighed Sum of two ============= //
+
+void sp_matrix3x2_get_weighted_sum2(
+    const float weight1, const SPMatrix3x2* matrix1,
+    const float weight2, const SPMatrix3x2* matrix2,
+    SPMatrix3x2* sum
+)
+{
+    sum->r1c1 = matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2;
+    sum->r1c2 = matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2;
+    sum->r1c3 = matrix1->r1c3 * weight1 + matrix2->r1c3 * weight2;
+
+    sum->r2c1 = matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2;
+    sum->r2c2 = matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2;
+    sum->r2c3 = matrix1->r2c3 * weight1 + matrix2->r2c3 * weight2;
+}
+
+void dp_matrix3x2_get_weighted_sum2(
+    const double weight1, const DPMatrix3x2* matrix1,
+    const double weight2, const DPMatrix3x2* matrix2,
+    DPMatrix3x2* sum
+)
+{
+    sum->r1c1 = matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2;
+    sum->r1c2 = matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2;
+    sum->r1c3 = matrix1->r1c3 * weight1 + matrix2->r1c3 * weight2;
+
+    sum->r2c1 = matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2;
+    sum->r2c2 = matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2;
+    sum->r2c3 = matrix1->r2c3 * weight1 + matrix2->r2c3 * weight2;
+}
+
+// ============ Weighed Sum of three ============ //
+
+void sp_matrix3x2_get_weighted_sum3(
+    const float weight1, const SPMatrix3x2* matrix1,
+    const float weight2, const SPMatrix3x2* matrix2,
+    const float weight3, const SPMatrix3x2* matrix3,
+    SPMatrix3x2* sum
+)
+{
+    sum->r1c1 = matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2 + matrix3->r1c1 * weight3;
+    sum->r1c2 = matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2 + matrix3->r1c2 * weight3;
+    sum->r1c3 = matrix1->r1c3 * weight1 + matrix2->r1c3 * weight2 + matrix3->r1c3 * weight3;
+
+    sum->r2c1 = matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2 + matrix3->r2c1 * weight3;
+    sum->r2c2 = matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2 + matrix3->r2c2 * weight3;
+    sum->r2c3 = matrix1->r2c3 * weight1 + matrix2->r2c3 * weight2 + matrix3->r2c3 * weight3;
+}
+
+void dp_matrix3x2_get_weighted_sum3(
+    const double weight1, const DPMatrix3x2* matrix1,
+    const double weight2, const DPMatrix3x2* matrix2,
+    const double weight3, const DPMatrix3x2* matrix3,
+    DPMatrix3x2* sum
+)
+{
+    sum->r1c1 = matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2 + matrix3->r1c1 * weight3;
+    sum->r1c2 = matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2 + matrix3->r1c2 * weight3;
+    sum->r1c3 = matrix1->r1c3 * weight1 + matrix2->r1c3 * weight2 + matrix3->r1c3 * weight3;
+
+    sum->r2c1 = matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2 + matrix3->r2c1 * weight3;
+    sum->r2c2 = matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2 + matrix3->r2c2 * weight3;
+    sum->r2c3 = matrix1->r2c3 * weight1 + matrix2->r2c3 * weight2 + matrix3->r2c3 * weight3;
+}
+
+// ============ Weighed Sum of four ============= //
+
+void sp_matrix3x2_get_weighted_sum4(
+    const float weight1, const SPMatrix3x2* matrix1,
+    const float weight2, const SPMatrix3x2* matrix2,
+    const float weight3, const SPMatrix3x2* matrix3,
+    const float weight4, const SPMatrix3x2* matrix4,
+    SPMatrix3x2* sum
+)
+{
+    sum->r1c1 = (matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2) + (matrix3->r1c1 * weight3 + matrix4->r1c1 * weight4);
+    sum->r1c2 = (matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2) + (matrix3->r1c2 * weight3 + matrix4->r1c2 * weight4);
+    sum->r1c3 = (matrix1->r1c3 * weight1 + matrix2->r1c3 * weight2) + (matrix3->r1c3 * weight3 + matrix4->r1c3 * weight4);
+
+    sum->r2c1 = (matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2) + (matrix3->r2c1 * weight3 + matrix4->r2c1 * weight4);
+    sum->r2c2 = (matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2) + (matrix3->r2c2 * weight3 + matrix4->r2c2 * weight4);
+    sum->r2c3 = (matrix1->r2c3 * weight1 + matrix2->r2c3 * weight2) + (matrix3->r2c3 * weight3 + matrix4->r2c3 * weight4);
+}
+
+void dp_matrix3x2_get_weighted_sum4(
+    const double weight1, const DPMatrix3x2* matrix1,
+    const double weight2, const DPMatrix3x2* matrix2,
+    const double weight3, const DPMatrix3x2* matrix3,
+    const double weight4, const DPMatrix3x2* matrix4,
+    DPMatrix3x2* sum
+)
+{
+    sum->r1c1 = (matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2) + (matrix3->r1c1 * weight3 + matrix4->r1c1 * weight4);
+    sum->r1c2 = (matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2) + (matrix3->r1c2 * weight3 + matrix4->r1c2 * weight4);
+    sum->r1c3 = (matrix1->r1c3 * weight1 + matrix2->r1c3 * weight2) + (matrix3->r1c3 * weight3 + matrix4->r1c3 * weight4);
+
+    sum->r2c1 = (matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2) + (matrix3->r2c1 * weight3 + matrix4->r2c1 * weight4);
+    sum->r2c2 = (matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2) + (matrix3->r2c2 * weight3 + matrix4->r2c2 * weight4);
+    sum->r2c3 = (matrix1->r2c3 * weight1 + matrix2->r2c3 * weight2) + (matrix3->r2c3 * weight3 + matrix4->r2c3 * weight4);
+}
+
+// ============ Weighed Sum of five ============= //
+
+void sp_matrix3x2_get_weighted_sum5(
+    const float weight1, const SPMatrix3x2* matrix1,
+    const float weight2, const SPMatrix3x2* matrix2,
+    const float weight3, const SPMatrix3x2* matrix3,
+    const float weight4, const SPMatrix3x2* matrix4,
+    const float weight5, const SPMatrix3x2* matrix5,
+    SPMatrix3x2* sum
+)
+{
+    sum->r1c1 = (matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2) + (matrix3->r1c1 * weight3 + matrix4->r1c1 * weight4) + matrix5->r1c1 * weight5;
+    sum->r1c2 = (matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2) + (matrix3->r1c2 * weight3 + matrix4->r1c2 * weight4) + matrix5->r1c2 * weight5;
+    sum->r1c3 = (matrix1->r1c3 * weight1 + matrix2->r1c3 * weight2) + (matrix3->r1c3 * weight3 + matrix4->r1c3 * weight4) + matrix5->r1c3 * weight5;
+
+    sum->r2c1 = (matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2) + (matrix3->r2c1 * weight3 + matrix4->r2c1 * weight4) + matrix5->r2c1 * weight5;
+    sum->r2c2 = (matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2) + (matrix3->r2c2 * weight3 + matrix4->r2c2 * weight4) + matrix5->r2c2 * weight5;
+    sum->r2c3 = (matrix1->r2c3 * weight1 + matrix2->r2c3 * weight2) + (matrix3->r2c3 * weight3 + matrix4->r2c3 * weight4) + matrix5->r2c3 * weight5;
+}
+
+void dp_matrix3x2_get_weighted_sum5(
+    const double weight1, const DPMatrix3x2* matrix1,
+    const double weight2, const DPMatrix3x2* matrix2,
+    const double weight3, const DPMatrix3x2* matrix3,
+    const double weight4, const DPMatrix3x2* matrix4,
+    const double weight5, const DPMatrix3x2* matrix5,
+    DPMatrix3x2* sum
+)
+{
+    sum->r1c1 = (matrix1->r1c1 * weight1 + matrix2->r1c1 * weight2) + (matrix3->r1c1 * weight3 + matrix4->r1c1 * weight4) + matrix5->r1c1 * weight5;
+    sum->r1c2 = (matrix1->r1c2 * weight1 + matrix2->r1c2 * weight2) + (matrix3->r1c2 * weight3 + matrix4->r1c2 * weight4) + matrix5->r1c2 * weight5;
+    sum->r1c3 = (matrix1->r1c3 * weight1 + matrix2->r1c3 * weight2) + (matrix3->r1c3 * weight3 + matrix4->r1c3 * weight4) + matrix5->r1c3 * weight5;
+
+    sum->r2c1 = (matrix1->r2c1 * weight1 + matrix2->r2c1 * weight2) + (matrix3->r2c1 * weight3 + matrix4->r2c1 * weight4) + matrix5->r2c1 * weight5;
+    sum->r2c2 = (matrix1->r2c2 * weight1 + matrix2->r2c2 * weight2) + (matrix3->r2c2 * weight3 + matrix4->r2c2 * weight4) + matrix5->r2c2 * weight5;
+    sum->r2c3 = (matrix1->r2c3 * weight1 + matrix2->r2c3 * weight2) + (matrix3->r2c3 * weight3 + matrix4->r2c3 * weight4) + matrix5->r2c3 * weight5;
+}
diff --git a/src/matrix3x2.h b/src/matrix3x2.h
index 9cbd73e..7fd5845 100644
--- a/src/matrix3x2.h
+++ b/src/matrix3x2.h
@@ -1,6 +1,10 @@
 #ifndef _GEOMETRY_MATRIX3X2_H_
 #define _GEOMETRY_MATRIX3X2_H_
 
+#include "vector2.h"
+#include "vector3.h"
+#include "matrixes.h"
+
 // =================== Reset ==================== //
 
 static inline void sp_matrix3x2_reset(SPMatrix3x2* matrix)
@@ -97,4 +101,272 @@ static inline void dp_matrix3x2_transpose_single(const SPMatrix2x3* from, DPMatr
     to->r2c3 = from->r3c2;
 }
 
+// ================= Set Row 1 ================== //
+
+static inline void sp_matrix3x2_set_row1(const float c1, const float c2, const float c3, SPMatrix3x2* matrix)
+{
+    matrix->r1c1 = c1;
+    matrix->r1c2 = c2;
+    matrix->r1c3 = c3;
+}
+
+static inline void dp_matrix3x2_set_row1(const double c1, const double c2, const double c3, DPMatrix3x2* matrix)
+{
+    matrix->r1c1 = c1;
+    matrix->r1c2 = c2;
+    matrix->r1c3 = c3;
+}
+
+// ================= Set Row 2 ================== //
+
+static inline void sp_matrix3x2_set_row2(const float c1, const float c2, const float c3, SPMatrix3x2* matrix)
+{
+    matrix->r2c1 = c1;
+    matrix->r2c2 = c2;
+    matrix->r2c3 = c3;
+}
+
+static inline void dp_matrix3x2_set_row2(const double c1, const double c2, const double c3, DPMatrix3x2* matrix)
+{
+    matrix->r2c1 = c1;
+    matrix->r2c2 = c2;
+    matrix->r2c3 = c3;
+}
+
+// ================ Set Column 1 ================ //
+
+static inline void sp_matrix3x2_set_column1(const float r1, const float r2, SPMatrix3x2* matrix)
+{
+    matrix->r1c1 = r1;
+    matrix->r2c1 = r2;
+}
+
+static inline void dp_matrix3x2_set_column1(const double r1, const double r2, DPMatrix3x2* matrix)
+{
+    matrix->r1c1 = r1;
+    matrix->r2c1 = r2;
+}
+
+// ================ Set Column 2 ================ //
+
+static inline void sp_matrix3x2_set_column2(const float r1, const float r2, SPMatrix3x2* matrix)
+{
+    matrix->r1c2 = r1;
+    matrix->r2c2 = r2;
+}
+
+static inline void dp_matrix3x2_set_column2(const double r1, const double r2, DPMatrix3x2* matrix)
+{
+    matrix->r1c2 = r1;
+    matrix->r2c2 = r2;
+}
+
+// ================ Set Column 3 ================ //
+
+static inline void sp_matrix3x2_set_column3(const float r1, const float r2, SPMatrix3x2* matrix)
+{
+    matrix->r1c3 = r1;
+    matrix->r2c3 = r2;
+}
+
+static inline void dp_matrix3x2_set_column3(const double r1, const double r2, DPMatrix3x2* matrix)
+{
+    matrix->r1c3 = r1;
+    matrix->r2c3 = r2;
+}
+
+// ================== Addition ================== //
+
+static inline void sp_matrix3x2_add(const SPMatrix3x2* matrix1, const SPMatrix3x2* matrix2, SPMatrix3x2* sum)
+{
+    sum->r1c1 = matrix1->r1c1 + matrix2->r1c1;
+    sum->r1c2 = matrix1->r1c2 + matrix2->r1c2;
+    sum->r1c3 = matrix1->r1c3 + matrix2->r1c3;
+
+    sum->r2c1 = matrix1->r2c1 + matrix2->r2c1;
+    sum->r2c2 = matrix1->r2c2 + matrix2->r2c2;
+    sum->r2c3 = matrix1->r2c3 + matrix2->r2c3;
+}
+
+static inline void dp_matrix3x2_add(const DPMatrix3x2* matrix1, const DPMatrix3x2* matrix2, DPMatrix3x2* sum)
+{
+    sum->r1c1 = matrix1->r1c1 + matrix2->r1c1;
+    sum->r1c2 = matrix1->r1c2 + matrix2->r1c2;
+    sum->r1c3 = matrix1->r1c3 + matrix2->r1c3;
+
+    sum->r2c1 = matrix1->r2c1 + matrix2->r2c1;
+    sum->r2c2 = matrix1->r2c2 + matrix2->r2c2;
+    sum->r2c3 = matrix1->r2c3 + matrix2->r2c3;
+}
+
+// ================ Subtraction ================= //
+
+static inline void sp_matrix3x2_subtract(const SPMatrix3x2* minuend, const SPMatrix3x2* subtrahend, SPMatrix3x2* difference)
+{
+    difference->r1c1 = minuend->r1c1 - subtrahend->r1c1;
+    difference->r1c2 = minuend->r1c2 - subtrahend->r1c2;
+    difference->r1c3 = minuend->r1c3 - subtrahend->r1c3;
+
+    difference->r2c1 = minuend->r2c1 - subtrahend->r2c1;
+    difference->r2c2 = minuend->r2c2 - subtrahend->r2c2;
+    difference->r2c3 = minuend->r2c3 - subtrahend->r2c3;
+}
+
+static inline void dp_matrix3x2_subtract(const DPMatrix3x2* minuend, const DPMatrix3x2* subtrahend, DPMatrix3x2* difference)
+{
+    difference->r1c1 = minuend->r1c1 - subtrahend->r1c1;
+    difference->r1c2 = minuend->r1c2 - subtrahend->r1c2;
+    difference->r1c3 = minuend->r1c3 - subtrahend->r1c3;
+
+    difference->r2c1 = minuend->r2c1 - subtrahend->r2c1;
+    difference->r2c2 = minuend->r2c2 - subtrahend->r2c2;
+    difference->r2c3 = minuend->r2c3 - subtrahend->r2c3;
+}
+
+// =============== Multiplication =============== //
+
+static inline void sp_matrix3x2_multiply(const SPMatrix3x2* multiplicand, const float multiplier, SPMatrix3x2* product)
+{
+    product->r1c1 = multiplicand->r1c1 * multiplier;
+    product->r1c2 = multiplicand->r1c2 * multiplier;
+    product->r1c3 = multiplicand->r1c3 * multiplier;
+
+    product->r2c1 = multiplicand->r2c1 * multiplier;
+    product->r2c2 = multiplicand->r2c2 * multiplier;
+    product->r2c3 = multiplicand->r2c3 * multiplier;
+}
+
+static inline void dp_matrix3x2_multiply(const DPMatrix3x2* multiplicand, const double multiplier, DPMatrix3x2* product)
+{
+    product->r1c1 = multiplicand->r1c1 * multiplier;
+    product->r1c2 = multiplicand->r1c2 * multiplier;
+    product->r1c3 = multiplicand->r1c3 * multiplier;
+
+    product->r2c1 = multiplicand->r2c1 * multiplier;
+    product->r2c2 = multiplicand->r2c2 * multiplier;
+    product->r2c3 = multiplicand->r2c3 * multiplier;
+}
+
+// ================== Division ================== //
+
+static inline void sp_matrix3x2_divide(const SPMatrix3x2* dividend, const float divisor, SPMatrix3x2* quotient)
+{
+    quotient->r1c1 = dividend->r1c1 / divisor;
+    quotient->r1c2 = dividend->r1c2 / divisor;
+    quotient->r1c3 = dividend->r1c3 / divisor;
+
+    quotient->r2c1 = dividend->r2c1 / divisor;
+    quotient->r2c2 = dividend->r2c2 / divisor;
+    quotient->r2c3 = dividend->r2c3 / divisor;
+}
+
+static inline void dp_matrix3x2_divide(const DPMatrix3x2* dividend, const double divisor, DPMatrix3x2* quotient)
+{
+    quotient->r1c1 = dividend->r1c1 / divisor;
+    quotient->r1c2 = dividend->r1c2 / divisor;
+    quotient->r1c3 = dividend->r1c3 / divisor;
+
+    quotient->r2c1 = dividend->r2c1 / divisor;
+    quotient->r2c2 = dividend->r2c2 / divisor;
+    quotient->r2c3 = dividend->r2c3 / divisor;
+}
+
+// ============= Weighed Sum of two ============= //
+
+void sp_matrix3x2_get_weighted_sum2(
+    const float weight1, const SPMatrix3x2* matrix1,
+    const float weight2, const SPMatrix3x2* matrix2,
+    SPMatrix3x2* sum
+);
+
+void dp_matrix3x2_get_weighted_sum2(
+    const double weight1, const DPMatrix3x2* matrix1,
+    const double weight2, const DPMatrix3x2* matrix2,
+    DPMatrix3x2* sum
+);
+
+// ============ Weighed Sum of three ============ //
+
+void sp_matrix3x2_get_weighted_sum3(
+    const float weight1, const SPMatrix3x2* matrix1,
+    const float weight2, const SPMatrix3x2* matrix2,
+    const float weight3, const SPMatrix3x2* matrix3,
+    SPMatrix3x2* sum
+);
+
+void dp_matrix3x2_get_weighted_sum3(
+    const double weight1, const DPMatrix3x2* matrix1,
+    const double weight2, const DPMatrix3x2* matrix2,
+    const double weight3, const DPMatrix3x2* matrix3,
+    DPMatrix3x2* sum
+);
+
+// ============ Weighed Sum of four ============= //
+
+void sp_matrix3x2_get_weighted_sum4(
+    const float weight1, const SPMatrix3x2* matrix1,
+    const float weight2, const SPMatrix3x2* matrix2,
+    const float weight3, const SPMatrix3x2* matrix3,
+    const float weight4, const SPMatrix3x2* matrix4,
+    SPMatrix3x2* sum
+);
+
+void dp_matrix3x2_get_weighted_sum4(
+    const double weight1, const DPMatrix3x2* matrix1,
+    const double weight2, const DPMatrix3x2* matrix2,
+    const double weight3, const DPMatrix3x2* matrix3,
+    const double weight4, const DPMatrix3x2* matrix4,
+    DPMatrix3x2* sum
+);
+
+// ============ Weighed Sum of five ============= //
+
+void sp_matrix3x2_get_weighted_sum5(
+    const float weight1, const SPMatrix3x2* matrix1,
+    const float weight2, const SPMatrix3x2* matrix2,
+    const float weight3, const SPMatrix3x2* matrix3,
+    const float weight4, const SPMatrix3x2* matrix4,
+    const float weight5, const SPMatrix3x2* matrix5,
+    SPMatrix3x2* sum
+);
+
+void dp_matrix3x2_get_weighted_sum5(
+    const double weight1, const DPMatrix3x2* matrix1,
+    const double weight2, const DPMatrix3x2* matrix2,
+    const double weight3, const DPMatrix3x2* matrix3,
+    const double weight4, const DPMatrix3x2* matrix4,
+    const double weight5, const DPMatrix3x2* matrix5,
+    DPMatrix3x2* sum
+);
+
+// ============ Left Vector Product ============= //
+
+static inline void sp_matrix3x2_left_product(const SPVector2* vector, const SPMatrix3x2* matrix, SPVector3* result)
+{
+    result->x1 = vector->x1 * matrix->r1c1 + vector->x2 * matrix->r2c1;
+    result->x2 = vector->x1 * matrix->r1c2 + vector->x2 * matrix->r2c2;
+    result->x3 = vector->x1 * matrix->r1c3 + vector->x2 * matrix->r2c3;
+}
+
+static inline void dp_matrix3x2_left_product(const DPVector2* vector, const DPMatrix3x2* matrix, DPVector3* result)
+{
+    result->x1 = vector->x1 * matrix->r1c1 + vector->x2 * matrix->r2c1;
+    result->x2 = vector->x1 * matrix->r1c2 + vector->x2 * matrix->r2c2;
+    result->x3 = vector->x1 * matrix->r1c3 + vector->x2 * matrix->r2c3;
+}
+
+// ============ Right Vector Product ============ //
+
+static inline void sp_matrix3x2_right_product(const SPMatrix3x2* matrix, const SPVector3* vector, SPVector2* result)
+{
+    result->x1 = matrix->r1c1 * vector->x1 + matrix->r1c2 * vector->x2 + matrix->r1c3 * vector->x3;
+    result->x2 = matrix->r2c1 * vector->x1 + matrix->r2c2 * vector->x2 + matrix->r2c3 * vector->x3;
+}
+
+static inline void dp_matrix3x2_right_product(const DPMatrix3x2* matrix, const DPVector3* vector, DPVector2* result)
+{
+    result->x1 = matrix->r1c1 * vector->x1 + matrix->r1c2 * vector->x2 + matrix->r1c3 * vector->x3;
+    result->x2 = matrix->r2c1 * vector->x1 + matrix->r2c2 * vector->x2 + matrix->r2c3 * vector->x3;
+}
+
 #endif
diff --git a/src/matrix3x3.h b/src/matrix3x3.h
index 5830757..ae195e8 100644
--- a/src/matrix3x3.h
+++ b/src/matrix3x3.h
@@ -282,22 +282,6 @@ static inline void dp_matrix3x3_make_transposed(const DPMatrix3x3* matrix, DPMat
     result->r3c3 = matrix->r3c3;
 }
 
-// ================ Set Diagonal ================ //
-
-static inline void sp_matrix3x3_set_main_diagonal(const float d1, const float d2, const float d3, SPMatrix3x3* matrix)
-{
-    matrix->r1c1 = d1;
-    matrix->r2c2 = d2;
-    matrix->r3c3 = d3;
-}
-
-static inline void dp_matrix3x3_set_main_diagonal(const double d1, const double d2, const double d3, DPMatrix3x3* matrix)
-{
-    matrix->r1c1 = d1;
-    matrix->r2c2 = d2;
-    matrix->r3c3 = d3;
-}
-
 // ================= Set Row 1 ================== //
 
 static inline void sp_matrix3x3_set_row1(const float c1, const float c2, const float c3, SPMatrix3x3* matrix)
diff --git a/src/matrixes.c b/src/matrixes.c
index 8be7c36..b2cd47e 100644
--- a/src/matrixes.c
+++ b/src/matrixes.c
@@ -116,6 +116,26 @@ void dp_matrix_product_2x3_at_3x2(const DPMatrix2x3* matrix1, const DPMatrix3x2*
     result->r3c3 = matrix1->r3c1 * matrix2->r1c3 + matrix1->r3c2 * matrix2->r2c3;
 }
 
+// ========== Matrix Product 3x2 at 2x3 ========= //
+
+static inline void sp_matrix_product_3x2_at_2x3(const SPMatrix3x2* matrix1, const SPMatrix2x3* matrix2, SPMatrix2x2* result)
+{
+    result->r1c1 = matrix1->r1c1 * matrix2->r1c1 + matrix1->r1c2 * matrix2->r2c1 + matrix1->r1c3 * matrix2->r3c1;
+    result->r1c2 = matrix1->r1c1 * matrix2->r1c2 + matrix1->r1c2 * matrix2->r2c2 + matrix1->r1c3 * matrix2->r3c2;
+
+    result->r2c1 = matrix1->r2c1 * matrix2->r1c1 + matrix1->r2c2 * matrix2->r2c1 + matrix1->r2c3 * matrix2->r3c1;
+    result->r2c2 = matrix1->r2c1 * matrix2->r1c2 + matrix1->r2c2 * matrix2->r2c2 + matrix1->r2c3 * matrix2->r3c2;
+}
+
+void dp_matrix_product_3x2_at_2x3(const DPMatrix3x2* matrix1, const DPMatrix2x3* matrix2, DPMatrix2x2* result)
+{
+    result->r1c1 = matrix1->r1c1 * matrix2->r1c1 + matrix1->r1c2 * matrix2->r2c1 + matrix1->r1c3 * matrix2->r3c1;
+    result->r1c2 = matrix1->r1c1 * matrix2->r1c2 + matrix1->r1c2 * matrix2->r2c2 + matrix1->r1c3 * matrix2->r3c2;
+
+    result->r2c1 = matrix1->r2c1 * matrix2->r1c1 + matrix1->r2c2 * matrix2->r2c1 + matrix1->r2c3 * matrix2->r3c1;
+    result->r2c2 = matrix1->r2c1 * matrix2->r1c2 + matrix1->r2c2 * matrix2->r2c2 + matrix1->r2c3 * matrix2->r3c2;
+}
+
 // ========== Matrix Product 3x2 at 3x3 ========= //
 
 void sp_matrix_product_3x2_at_3x3(const SPMatrix3x2* matrix1, const SPMatrix3x3* matrix2, SPMatrix3x2* result)
@@ -139,13 +159,13 @@ void sp_matrix_product_3x2_at_3x3(const SPMatrix3x2* matrix1, const SPMatrix3x3*
 
 void dp_matrix_product_3x2_at_3x3(const DPMatrix3x2* matrix1, const DPMatrix3x3* matrix2, DPMatrix3x2* result)
 {
-    const float r1c1 = matrix1->r1c1 * matrix2->r1c1 + matrix1->r1c2 * matrix2->r2c1 + matrix1->r1c3 * matrix2->r3c1;
-    const float r1c2 = matrix1->r1c1 * matrix2->r1c2 + matrix1->r1c2 * matrix2->r2c2 + matrix1->r1c3 * matrix2->r3c2;
-    const float r1c3 = matrix1->r1c1 * matrix2->r1c3 + matrix1->r1c2 * matrix2->r2c3 + matrix1->r1c3 * matrix2->r3c3;
+    const double r1c1 = matrix1->r1c1 * matrix2->r1c1 + matrix1->r1c2 * matrix2->r2c1 + matrix1->r1c3 * matrix2->r3c1;
+    const double r1c2 = matrix1->r1c1 * matrix2->r1c2 + matrix1->r1c2 * matrix2->r2c2 + matrix1->r1c3 * matrix2->r3c2;
+    const double r1c3 = matrix1->r1c1 * matrix2->r1c3 + matrix1->r1c2 * matrix2->r2c3 + matrix1->r1c3 * matrix2->r3c3;
 
-    const float r2c1 = matrix1->r2c1 * matrix2->r1c1 + matrix1->r2c2 * matrix2->r2c1 + matrix1->r2c3 * matrix2->r3c1;
-    const float r2c2 = matrix1->r2c1 * matrix2->r1c2 + matrix1->r2c2 * matrix2->r2c2 + matrix1->r2c3 * matrix2->r3c2;
-    const float r2c3 = matrix1->r2c1 * matrix2->r1c3 + matrix1->r2c2 * matrix2->r2c3 + matrix1->r2c3 * matrix2->r3c3;
+    const double r2c1 = matrix1->r2c1 * matrix2->r1c1 + matrix1->r2c2 * matrix2->r2c1 + matrix1->r2c3 * matrix2->r3c1;
+    const double r2c2 = matrix1->r2c1 * matrix2->r1c2 + matrix1->r2c2 * matrix2->r2c2 + matrix1->r2c3 * matrix2->r3c2;
+    const double r2c3 = matrix1->r2c1 * matrix2->r1c3 + matrix1->r2c2 * matrix2->r2c3 + matrix1->r2c3 * matrix2->r3c3;
 
     result->r1c1 = r1c1;
     result->r1c2 = r1c2;
@@ -160,14 +180,14 @@ void dp_matrix_product_3x2_at_3x3(const DPMatrix3x2* matrix1, const DPMatrix3x3*
 
 void sp_matrix_product_3x3_at_2x3(const SPMatrix3x3* matrix1, const SPMatrix2x3* matrix2, SPMatrix2x3* result)
 {
-    const double r1c1 = matrix1->r1c1 * matrix2->r1c1 + matrix1->r1c2 * matrix2->r2c1 + matrix1->r1c3 * matrix2->r3c1;
-    const double r1c2 = matrix1->r1c1 * matrix2->r1c2 + matrix1->r1c2 * matrix2->r2c2 + matrix1->r1c3 * matrix2->r3c2;
+    const float r1c1 = matrix1->r1c1 * matrix2->r1c1 + matrix1->r1c2 * matrix2->r2c1 + matrix1->r1c3 * matrix2->r3c1;
+    const float r1c2 = matrix1->r1c1 * matrix2->r1c2 + matrix1->r1c2 * matrix2->r2c2 + matrix1->r1c3 * matrix2->r3c2;
 
-    const double r2c1 = matrix1->r2c1 * matrix2->r1c1 + matrix1->r2c2 * matrix2->r2c1 + matrix1->r2c3 * matrix2->r3c1;
-    const double r2c2 = matrix1->r2c1 * matrix2->r1c2 + matrix1->r2c2 * matrix2->r2c2 + matrix1->r2c3 * matrix2->r3c2;
+    const float r2c1 = matrix1->r2c1 * matrix2->r1c1 + matrix1->r2c2 * matrix2->r2c1 + matrix1->r2c3 * matrix2->r3c1;
+    const float r2c2 = matrix1->r2c1 * matrix2->r1c2 + matrix1->r2c2 * matrix2->r2c2 + matrix1->r2c3 * matrix2->r3c2;
 
-    const double r3c1 = matrix1->r3c1 * matrix2->r1c1 + matrix1->r3c2 * matrix2->r2c1 + matrix1->r3c3 * matrix2->r3c1;
-    const double r3c2 = matrix1->r3c1 * matrix2->r1c2 + matrix1->r3c2 * matrix2->r2c2 + matrix1->r3c3 * matrix2->r3c2;
+    const float r3c1 = matrix1->r3c1 * matrix2->r1c1 + matrix1->r3c2 * matrix2->r2c1 + matrix1->r3c3 * matrix2->r3c1;
+    const float r3c2 = matrix1->r3c1 * matrix2->r1c2 + matrix1->r3c2 * matrix2->r2c2 + matrix1->r3c3 * matrix2->r3c2;
 
     result->r1c1 = r1c1;
     result->r1c2 = r1c2;
diff --git a/src/matrixes.h b/src/matrixes.h
index dd63a11..0269e5d 100644
--- a/src/matrixes.h
+++ b/src/matrixes.h
@@ -105,23 +105,9 @@ void dp_matrix_product_2x3_at_3x2(const DPMatrix2x3* matrix1, const DPMatrix3x2*
 
 // ========== Matrix Product 3x2 at 2x3 ========= //
 
-void sp_matrix_product_3x2_at_2x3(const SPMatrix3x2* matrix1, const SPMatrix2x3* matrix2, SPMatrix2x2* result)
-{
-    result->r1c1 = matrix1->r1c1 * matrix2->r1c1 + matrix1->r1c2 * matrix2->r2c1 + matrix1->r1c3 * matrix2->r3c1;
-    result->r1c2 = matrix1->r1c1 * matrix2->r1c2 + matrix1->r1c2 * matrix2->r2c2 + matrix1->r1c3 * matrix2->r3c2;
+void sp_matrix_product_3x2_at_2x3(const SPMatrix3x2* matrix1, const SPMatrix2x3* matrix2, SPMatrix2x2* result);
 
-    result->r2c1 = matrix1->r2c1 * matrix2->r1c1 + matrix1->r2c2 * matrix2->r2c1 + matrix1->r2c3 * matrix2->r3c1;
-    result->r2c2 = matrix1->r2c1 * matrix2->r1c2 + matrix1->r2c2 * matrix2->r2c2 + matrix1->r2c3 * matrix2->r3c2;
-}
-
-void dp_matrix_product_3x2_at_2x3(const DPMatrix3x2* matrix1, const DPMatrix2x3* matrix2, DPMatrix2x2* result)
-{
-    result->r1c1 = matrix1->r1c1 * matrix2->r1c1 + matrix1->r1c2 * matrix2->r2c1 + matrix1->r1c3 * matrix2->r3c1;
-    result->r1c2 = matrix1->r1c1 * matrix2->r1c2 + matrix1->r1c2 * matrix2->r2c2 + matrix1->r1c3 * matrix2->r3c2;
-
-    result->r2c1 = matrix1->r2c1 * matrix2->r1c1 + matrix1->r2c2 * matrix2->r2c1 + matrix1->r2c3 * matrix2->r3c1;
-    result->r2c2 = matrix1->r2c1 * matrix2->r1c2 + matrix1->r2c2 * matrix2->r2c2 + matrix1->r2c3 * matrix2->r3c2;
-}
+void dp_matrix_product_3x2_at_2x3(const DPMatrix3x2* matrix1, const DPMatrix2x3* matrix2, DPMatrix2x2* result);
 
 // ========== Matrix Product 3x2 at 3x3 ========= //