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29 # define M_1_2PI 0.15915494309189533577
33 #ifndef _USE_MATH_DEFINES
36 # define M_E 2.7182818284590452354
37 # define M_LOG2E 1.4426950408889634074
38 # define M_LOG10E 0.43429448190325182765
39 # define M_LN2 0.69314718055994530942
40 # define M_LN10 2.30258509299404568402
41 # define M_PI 3.14159265358979323846
42 # define M_PI_2 1.57079632679489661923
43 # define M_PI_4 0.78539816339744830962
44 # define M_1_PI 0.31830988618379067154
45 # define M_2_PI 0.63661977236758134308
46 # define M_2_SQRTPI 1.12837916709551257390
47 # define M_SQRT2 1.41421356237309504880
48 # define M_SQRT1_2 0.70710678118654752440
57 # define M_El 2.7182818284590452353602874713526625L
60 #if defined(__GNUC__) && (__GNUC__<3)
61 # define M_LOG2El 1.4426950408889634073599246810018922L
64 # define M_LOG10El 0.4342944819032518276511289189166051L
65 # define M_LN2l 0.6931471805599453094172321214581766L
66 # define M_LN10l 2.3025850929940456840179914546843642L
67 # define M_PIl 3.1415926535897932384626433832795029L
68 # define M_PI_2l 1.5707963267948966192313216916397514L
69 # define M_PI_4l 0.7853981633974483096156608458198757L
70 # define M_1_PIl 0.3183098861837906715377675267450287L
71 # define M_2_PIl 0.6366197723675813430755350534900574L
72 # define M_2_SQRTPIl 1.1283791670955125738961589031215452L
73 # define M_SQRT2l 1.4142135623730950488016887242096981L
74 # define M_SQRT1_2l 0.7071067811865475244008443621048490L
83 # define TWO_PI (PI*2.)