diff options
| author | Bdale Garbee <bdale@gag.com> | 2018-10-20 01:18:12 -0600 |
|---|---|---|
| committer | Bdale Garbee <bdale@gag.com> | 2018-10-20 01:18:12 -0600 |
| commit | 0686a7b8aec524d81bda4c572549a3a068ce0eed (patch) | |
| tree | 2e6061c834b99e3b9668be8b3cfb1627251365d3 /src/math/kf_cos.c | |
| parent | 6aa451ce81bfdfe679e3f9902043a5f0d235c745 (diff) | |
| parent | cc528f1ff0271ec6488a1a7b91c731183502101e (diff) | |
Merge branch 'master' of ssh://git.gag.com/scm/git/fw/altos
Diffstat (limited to 'src/math/kf_cos.c')
| -rw-r--r-- | src/math/kf_cos.c | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/src/math/kf_cos.c b/src/math/kf_cos.c deleted file mode 100644 index 4f71af23..00000000 --- a/src/math/kf_cos.c +++ /dev/null @@ -1,59 +0,0 @@ -/* kf_cos.c -- float version of k_cos.c - * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. - */ - -/* - * ==================================================== - * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. - * - * Developed at SunPro, a Sun Microsystems, Inc. business. - * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice - * is preserved. - * ==================================================== - */ - -#include "fdlibm.h" - -#ifdef __STDC__ -static const float -#else -static float -#endif -one = 1.0000000000e+00, /* 0x3f800000 */ -C1 = 4.1666667908e-02, /* 0x3d2aaaab */ -C2 = -1.3888889225e-03, /* 0xbab60b61 */ -C3 = 2.4801587642e-05, /* 0x37d00d01 */ -C4 = -2.7557314297e-07, /* 0xb493f27c */ -C5 = 2.0875723372e-09, /* 0x310f74f6 */ -C6 = -1.1359647598e-11; /* 0xad47d74e */ - -#ifdef __STDC__ - float __kernel_cosf(float x, float y) -#else - float __kernel_cosf(x, y) - float x,y; -#endif -{ - float a,hz,z,r,qx; - __int32_t ix; - GET_FLOAT_WORD(ix,x); - ix &= 0x7fffffff; /* ix = |x|'s high word*/ - if(ix<0x32000000) { /* if x < 2**27 */ - if(((int)x)==0) return one; /* generate inexact */ - } - z = x*x; - r = z*(C1+z*(C2+z*(C3+z*(C4+z*(C5+z*C6))))); - if(ix < 0x3e99999a) /* if |x| < 0.3 */ - return one - ((float)0.5*z - (z*r - x*y)); - else { - if(ix > 0x3f480000) { /* x > 0.78125 */ - qx = (float)0.28125; - } else { - SET_FLOAT_WORD(qx,ix-0x01000000); /* x/4 */ - } - hz = (float)0.5*z-qx; - a = one-qx; - return a - (hz - (z*r-x*y)); - } -} |