Завершение большого переименования

basic-geometry/utilities.h

@@ -0,0 +1,56 @@
+#ifndef _BGC_UTILITIES_H_
+#define _BGC_UTILITIES_H_
+
+#define BGC_EPSYLON_EFFECTIVENESS_LIMIT_FP32 10.0f
+
+#define BGC_EPSYLON_FP32 5E-7f
+#define BGC_TWO_EPSYLON_FP32 1E-6f
+#define BGC_SQUARE_EPSYLON_FP32 2.5E-13f
+
+#define BGC_ONE_THIRD_FP32 0.333333333f
+#define BGC_ONE_SIXTH_FP32 0.166666667f
+#define BGC_ONE_NINETH_FP32 0.111111111f
+
+#define BGC_GOLDEN_RATIO_HIGH_FP32 1.618034f
+#define BGC_GOLDEN_RATIO_LOW_FP32 0.618034f
+
+#define BGC_EPSYLON_EFFECTIVENESS_LIMIT_FP64 10.0
+
+#define BGC_EPSYLON_FP64 5E-14
+#define BGC_TWO_EPSYLON_FP64 1E-13
+#define BGC_SQUARE_EPSYLON_FP64 2.5E-27
+
+#define BGC_ONE_THIRD_FP64 0.333333333333333333
+#define BGC_ONE_SIXTH_FP64 0.166666666666666667
+#define BGC_ONE_NINETH_FP64 0.111111111111111111
+
+#define BGC_GOLDEN_RATIO_HIGH_FP64 1.61803398874989485
+#define BGC_GOLDEN_RATIO_LOW_FP64 0.61803398874989485
+
+inline int bgc_are_equal_fp32(const float value1, const float value2)
+{
+    if (-BGC_EPSYLON_EFFECTIVENESS_LIMIT_FP32 < value1 && value1 < BGC_EPSYLON_EFFECTIVENESS_LIMIT_FP32) {
+        return -BGC_EPSYLON_FP32 <= (value1 - value2) && (value1 - value2) <= BGC_EPSYLON_FP32;
+    }
+
+    if (value1 < 0.0f) {
+        return (1.0f + BGC_EPSYLON_FP32) * value2 <= value1 && (1.0f + BGC_EPSYLON_FP32) * value1 <= value2;
+    }
+
+    return value2 <= value1 * (1.0f + BGC_EPSYLON_FP32) && value1 <= value2 * (1.0f + BGC_EPSYLON_FP32);
+}
+
+inline int bgc_are_equal_fp64(const double value1, const double value2)
+{
+    if (-BGC_EPSYLON_EFFECTIVENESS_LIMIT_FP64 < value1 && value1 < BGC_EPSYLON_EFFECTIVENESS_LIMIT_FP64) {
+        return -BGC_EPSYLON_FP64 <= (value1 - value2) && (value1 - value2) <= BGC_EPSYLON_FP64;
+    }
+
+    if (value1 < 0.0) {
+        return (1.0 + BGC_EPSYLON_FP64) * value2 <= value1 && (1.0 + BGC_EPSYLON_FP64) * value1 <= value2;
+    }
+
+    return value2 <= value1 * (1.0 + BGC_EPSYLON_FP64) && value1 <= value2 * (1.0 + BGC_EPSYLON_FP64);
+}
+
+#endif