30 #ifdef fl_math_h_cyclic_include
31 # include "/usr/include/math.h"
37 # define fl_math_h_cyclic_include
39 # undef fl_math_h_cyclic_include
47 # define M_PI 3.14159265358979323846
48 # define M_PI_2 1.57079632679489661923
49 # define M_PI_4 0.78539816339744830962
50 # define M_1_PI 0.31830988618379067154
51 # define M_2_PI 0.63661977236758134308
55 # define M_SQRT2 1.41421356237309504880
56 # define M_SQRT1_2 0.70710678118654752440
59 # if (defined(WIN32) || defined(CRAY)) && !defined(__MINGW32__) && !defined(__MWERKS__)
61 inline double rint(
double v) {
return floor(v+.5);}
62 inline double copysign(
double a,
double b) {
return b<0 ? -a : a;}
64 # endif // (WIN32 || CRAY) && !__MINGW32__ && !__MWERKS__