about summary refs log tree commit diff
path: root/src/math/k_cosf.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/math/k_cosf.c')
-rw-r--r--src/math/k_cosf.c52
1 files changed, 0 insertions, 52 deletions
diff --git a/src/math/k_cosf.c b/src/math/k_cosf.c
deleted file mode 100644
index 61dc3749..00000000
--- a/src/math/k_cosf.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/* k_cosf.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 <math.h>
-#include "math_private.h"
-
-static const float
-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 */
-
-float
-__kernel_cosf(float x, float y)
-{
-        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));
-        }
-}