5 // The commented-out functions need no implementation because DarkPlaces offers
6 // them as builtins. They are listed here anyway for completeness sake.
9 const int FP_INFINITE = 1;
10 const int FP_ZERO = 2;
11 const int FP_SUBNORMAL = 3;
12 const int FP_NORMAL = 4;
13 int fpclassify(float e);
14 bool isfinite(float e);
17 bool isnormal(float e);
18 bool signbit(float e);
20 //float acos(float e);
21 //float asin(float e);
22 //float atan(float e);
23 //float atan2(float f, float e);
39 vector frexp(float e); // returns mantissa as _x, exponent as _y
41 float ldexp(float e, int e);
43 float logn(float e, float base);
48 vector modf(float f); // fraction as _x, integer as _y
50 float scalbn(float e, int n);
53 //float fabs(float e);
54 float hypot(float e, float f);
55 //float pow(float e, float f);
56 //float sqrt(float e, float f);
60 vector lgamma(float e); // value in _x, sign in _y
61 float tgamma(float e);
72 float pymod(float e, float f);
74 //float ceil(float e);
75 //float floor(float e);
76 float nearbyint(float e);
77 //float rint(float e);
78 //float round(float e);
81 float fmod(float e, float f);
82 float remainder(float e, float f);
83 vector remquo(float e, float f);
85 float copysign(float e, float f);
86 float nan(string tag);
87 float nextafter(float e, float f);
88 float nexttoward(float e, float f);
90 float fdim(float e, float f);
91 float fmax(float e, float f);
92 float fmin(float e, float f);
93 float fma(float e, float f, float g);
95 int isgreater(float e, float f);
96 int isgreaterequal(float e, float f);
97 int isless(float e, float f);
98 int islessequal(float e, float f);
99 int islessgreater(float e, float f);
100 int isunordered(float e, float f);
102 const float M_E = 2.7182818284590452354; /* e */
103 const float M_LOG2E = 1.4426950408889634074; /* log_2 e */
104 const float M_LOG10E = 0.43429448190325182765; /* log_10 e */
105 const float M_LN2 = 0.69314718055994530942; /* log_e 2 */
106 const float M_LN10 = 2.30258509299404568402; /* log_e 10 */
107 // -Wdouble-declaration
108 #define M_PI 3.14159265358979323846 /* pi */
109 const float M_PI_2 = 1.57079632679489661923; /* pi/2 */
110 const float M_PI_4 = 0.78539816339744830962; /* pi/4 */
111 const float M_1_PI = 0.31830988618379067154; /* 1/pi */
112 const float M_2_PI = 0.63661977236758134308; /* 2/pi */
113 const float M_2_SQRTPI = 1.12837916709551257390; /* 2/sqrt(pi) */
114 const float M_SQRT2 = 1.41421356237309504880; /* sqrt(2) */
115 const float M_SQRT1_2 = 0.70710678118654752440; /* 1/sqrt(2) */