6 // The commented-out functions need no implementation because DarkPlaces offers
7 // them as builtins. They are listed here anyway for completeness sake.
10 const int FP_INFINITE = 1;
11 const int FP_ZERO = 2;
12 const int FP_SUBNORMAL = 3;
13 const int FP_NORMAL = 4;
14 int fpclassify(float x);
15 bool isfinite(float x);
18 bool isnormal(float x);
19 bool signbit(float x);
21 //float acos(float x);
22 //float asin(float x);
23 //float atan(float x);
24 //float atan2(float y, float x);
40 vector frexp(float x); // returns mantissa as _x, exponent as _y
42 float ldexp(float x, int e);
48 vector modf(float f); // fraction as _x, integer as _y
50 float scalbn(float x, int n);
53 //float fabs(float x);
54 float hypot(float x, float y);
55 //float pow(float x, float y);
56 //float sqrt(float x, float y);
60 vector lgamma(float x); // value in _x, sign in _y
61 float tgamma(float x);
63 //float ceil(float x);
64 //float floor(float x);
65 float nearbyint(float x);
66 //float rint(float x);
67 //float round(float x);
70 float fmod(float x, float y);
71 float remainder(float x, float y);
72 vector remquo(float x, float y);
74 float copysign(float x, float y);
75 float nan(string tag);
76 float nextafter(float x, float y);
77 float nexttoward(float x, float y);
79 float fdim(float x, float y);
80 float fmax(float x, float y);
81 float fmin(float x, float y);
82 float fma(float x, float y, float z);
84 int isgreater(float x, float y);
85 int isgreaterequal(float x, float y);
86 int isless(float x, float y);
87 int islessequal(float x, float y);
88 int islessgreater(float x, float y);
89 int isunordered(float x, float y);
91 const float M_E = 2.7182818284590452354; /* e */
92 const float M_LOG2E = 1.4426950408889634074; /* log_2 e */
93 const float M_LOG10E = 0.43429448190325182765; /* log_10 e */
94 const float M_LN2 = 0.69314718055994530942; /* log_e 2 */
95 const float M_LN10 = 2.30258509299404568402; /* log_e 10 */
96 const float M_PI = 3.14159265358979323846; /* pi */
97 const float M_PI_2 = 1.57079632679489661923; /* pi/2 */
98 const float M_PI_4 = 0.78539816339744830962; /* pi/4 */
99 const float M_1_PI = 0.31830988618379067154; /* 1/pi */
100 const float M_2_PI = 0.63661977236758134308; /* 2/pi */
101 const float M_2_SQRTPI = 1.12837916709551257390; /* 2/sqrt(pi) */
102 const float M_SQRT2 = 1.41421356237309504880; /* sqrt(2) */
103 const float M_SQRT1_2 = 0.70710678118654752440; /* 1/sqrt(2) */