diff options
Diffstat (limited to 'source/blender/blenlib/BLI_math_base.h')
| -rw-r--r-- | source/blender/blenlib/BLI_math_base.h | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/source/blender/blenlib/BLI_math_base.h b/source/blender/blenlib/BLI_math_base.h index 69d6478e0e2..67c1ffcebc0 100644 --- a/source/blender/blenlib/BLI_math_base.h +++ b/source/blender/blenlib/BLI_math_base.h @@ -80,6 +80,9 @@ #define MAXFLOAT ((float)3.40282347e+38) #endif +/* do not redefine functions from C99 or POSIX.1-2001 */ +#if !(defined(_ISOC99_SOURCE) || (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L)) + #ifndef sqrtf #define sqrtf(a) ((float)sqrt(a)) #endif @@ -129,6 +132,8 @@ #define hypotf(a, b) ((float)hypot(a, b)) #endif +#endif /* C99 or POSIX.1-2001 */ + #ifdef WIN32 # ifndef FREE_WINDOWS # define isnan(n) _isnan(n) @@ -174,6 +179,11 @@ #include "intern/math_base_inline.c" #endif +#ifdef BLI_MATH_GCC_WARN_PRAGMA +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wredundant-decls" +#endif + /******************************* Float ******************************/ MINLINE float sqrt3f(float f); @@ -212,5 +222,30 @@ extern double round(double x); double double_round(double x, int ndigits); -#endif /* __BLI_MATH_BASE_H__ */ +#ifdef BLI_MATH_GCC_WARN_PRAGMA +# pragma GCC diagnostic pop +#endif + +/* asserts, some math functions expect normalized inputs + * check the vector is unit length, or zero length (which can't be helped in some cases). + */ +#ifdef DEBUG +/* note: 0.0001 is too small becaues normals may be converted from short's: see [#34322] */ +# define BLI_ASSERT_UNIT_EPSILON 0.0002f +# define BLI_ASSERT_UNIT_V3(v) { \ + const float _test_unit = len_squared_v3(v); \ + BLI_assert((fabsf(_test_unit - 1.0f) < BLI_ASSERT_UNIT_EPSILON) || \ + (fabsf(_test_unit) < BLI_ASSERT_UNIT_EPSILON)); \ +} (void)0 +# define BLI_ASSERT_UNIT_V2(v) { \ + const float _test_unit = len_squared_v2(v); \ + BLI_assert((fabsf(_test_unit - 1.0f) < BLI_ASSERT_UNIT_EPSILON) || \ + (fabsf(_test_unit) < BLI_ASSERT_UNIT_EPSILON)); \ +} (void)0 +#else +# define BLI_ASSERT_UNIT_V2(v) (void)0 +# define BLI_ASSERT_UNIT_V3(v) (void)0 +#endif + +#endif /* __BLI_MATH_BASE_H__ */ |