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authorUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
committerUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
commitabfbdde177c3a7155070dda1b2cdc8292054cc26 (patch)
treee021306b596381fbf8311d2b7eb294e918ff17c8 /sysdeps/libm-ieee754/e_coshf.c
parent86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff)
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Update.
Diffstat (limited to 'sysdeps/libm-ieee754/e_coshf.c')
-rw-r--r--sysdeps/libm-ieee754/e_coshf.c72
1 files changed, 0 insertions, 72 deletions
diff --git a/sysdeps/libm-ieee754/e_coshf.c b/sysdeps/libm-ieee754/e_coshf.c
deleted file mode 100644
index 223fbeea20..0000000000
--- a/sysdeps/libm-ieee754/e_coshf.c
+++ /dev/null
@@ -1,72 +0,0 @@
-/* e_coshf.c -- float version of e_cosh.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.
- * ====================================================
- */
-
-#if defined(LIBM_SCCS) && !defined(lint)
-static char rcsid[] = "$NetBSD: e_coshf.c,v 1.6 1996/04/08 15:43:41 phil Exp $";
-#endif
-
-#include "math.h"
-#include "math_private.h"
-
-#ifdef __STDC__
-static const float huge = 1.0e30;
-static const float one = 1.0, half=0.5;
-#else
-static float one = 1.0, half=0.5, huge = 1.0e30;
-#endif
-
-#ifdef __STDC__
- float __ieee754_coshf(float x)
-#else
- float __ieee754_coshf(x)
- float x;
-#endif
-{
- float t,w;
- int32_t ix;
-
- GET_FLOAT_WORD(ix,x);
- ix &= 0x7fffffff;
-
- /* x is INF or NaN */
- if(ix>=0x7f800000) return x*x;
-
- /* |x| in [0,0.5*ln2], return 1+expm1(|x|)^2/(2*exp(|x|)) */
- if(ix<0x3eb17218) {
- t = __expm1f(fabsf(x));
- w = one+t;
- if (ix<0x24000000) return w; /* cosh(tiny) = 1 */
- return one+(t*t)/(w+w);
- }
-
- /* |x| in [0.5*ln2,22], return (exp(|x|)+1/exp(|x|)/2; */
- if (ix < 0x41b00000) {
- t = __ieee754_expf(fabsf(x));
- return half*t+half/t;
- }
-
- /* |x| in [22, log(maxdouble)] return half*exp(|x|) */
- if (ix < 0x42b17180) return half*__ieee754_expf(fabsf(x));
-
- /* |x| in [log(maxdouble), overflowthresold] */
- if (ix<=0x42b2d4fc) {
- w = __ieee754_expf(half*fabsf(x));
- t = half*w;
- return t*w;
- }
-
- /* |x| > overflowthresold, cosh(x) overflow */
- return huge*huge;
-}