diff options
Diffstat (limited to 'source/blender/blenlib/intern/math_base.c')
| -rw-r--r-- | source/blender/blenlib/intern/math_base.c | 41 |
1 files changed, 10 insertions, 31 deletions
diff --git a/source/blender/blenlib/intern/math_base.c b/source/blender/blenlib/intern/math_base.c index 3ff1af3513e..0a1e9e8a8a1 100644 --- a/source/blender/blenlib/intern/math_base.c +++ b/source/blender/blenlib/intern/math_base.c @@ -31,41 +31,20 @@ #include "BLI_strict_flags.h" -/* WARNING: MSVC compiling hack for double_round() */ -#if (defined(WIN32) || defined(WIN64)) && !(defined(FREE_WINDOWS)) - -/* from python 3.1 pymath.c */ -double copysign(double x, double y) +int pow_i(int base, int exp) { - /* use atan2 to distinguish -0.0 from 0.0 */ - if (y > 0.0 || (y == 0.0 && atan2(y, -1.0) > 0.0)) { - return fabs(x); - } - else { - return -fabs(x); + int result = 1; + BLI_assert(exp >= 0); + while (exp) { + if (exp & 1) { + result *= base; + } + exp >>= 1; + base *= base; } -} -/* from python 3.1 pymath.c */ -double round(double x) -{ - double absx, y; - absx = fabs(x); - y = floor(absx); - if (absx - y >= 0.5) - y += 1.0; - return copysign(y, x); + return result; } -#else /* OpenSuse 11.1 seems to need this. */ -# ifdef __GNUC__ -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wredundant-decls" -# endif -double round(double x); -# ifdef __GNUC__ -# pragma GCC diagnostic pop -# endif -#endif /* from python 3.1 floatobject.c * ndigits must be between 0 and 21 */ |