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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_sinhl.c
parent86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff)
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Update.
Diffstat (limited to 'sysdeps/libm-ieee754/e_sinhl.c')
-rw-r--r--sysdeps/libm-ieee754/e_sinhl.c91
1 files changed, 0 insertions, 91 deletions
diff --git a/sysdeps/libm-ieee754/e_sinhl.c b/sysdeps/libm-ieee754/e_sinhl.c
deleted file mode 100644
index 4f9cfe2c38..0000000000
--- a/sysdeps/libm-ieee754/e_sinhl.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/* e_asinhl.c -- long double version of e_asinh.c.
- * Conversion to long double by Ulrich Drepper,
- * Cygnus Support, drepper@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: $";
-#endif
-
-/* __ieee754_sinhl(x)
- * Method :
- * mathematically sinh(x) if defined to be (exp(x)-exp(-x))/2
- * 1. Replace x by |x| (sinhl(-x) = -sinhl(x)).
- * 2.
- * E + E/(E+1)
- * 0 <= x <= 25 : sinhl(x) := --------------, E=expm1l(x)
- * 2
- *
- * 25 <= x <= lnovft : sinhl(x) := expl(x)/2
- * lnovft <= x <= ln2ovft: sinhl(x) := expl(x/2)/2 * expl(x/2)
- * ln2ovft < x : sinhl(x) := x*shuge (overflow)
- *
- * Special cases:
- * sinhl(x) is |x| if x is +INF, -INF, or NaN.
- * only sinhl(0)=0 is exact for finite x.
- */
-
-#include "math.h"
-#include "math_private.h"
-
-#ifdef __STDC__
-static const long double one = 1.0, shuge = 1.0e4931L;
-#else
-static long double one = 1.0, shuge = 1.0e4931L;
-#endif
-
-#ifdef __STDC__
- long double __ieee754_sinhl(long double x)
-#else
- long double __ieee754_sinhl(x)
- long double x;
-#endif
-{
- long double t,w,h;
- u_int32_t jx,ix,i0,i1;
-
- /* Words of |x|. */
- GET_LDOUBLE_WORDS(jx,i0,i1,x);
- ix = jx&0x7fff;
-
- /* x is INF or NaN */
- if(ix==0x7fff) return x+x;
-
- h = 0.5;
- if (jx & 0x8000) h = -h;
- /* |x| in [0,25], return sign(x)*0.5*(E+E/(E+1))) */
- if (ix < 0x4003 || (ix == 0x4003 && i0 <= 0xc8000000)) { /* |x|<25 */
- if (ix<0x3fe3) /* |x|<2**-28 */
- if(shuge+x>one) return x;/* sinh(tiny) = tiny with inexact */
- t = __expm1l(fabsl(x));
- if(ix<0x3fff) return h*(2.0*t-t*t/(t+one));
- return h*(t+t/(t+one));
- }
-
- /* |x| in [25, log(maxdouble)] return 0.5*exp(|x|) */
- if (ix < 0x400c || (ix == 0x400c && i0 < 0xb17217f7))
- return h*__ieee754_expl(fabsl(x));
-
- /* |x| in [log(maxdouble), overflowthreshold] */
- if (ix<0x400c || (ix == 0x400c && (i0 < 0xb174ddc0
- || (i0 == 0xb174ddc0
- && i1 <= 0x31aec0ea)))) {
- w = __ieee754_expl(0.5*fabsl(x));
- t = h*w;
- return t*w;
- }
-
- /* |x| > overflowthreshold, sinhl(x) overflow */
- return x*shuge;
-}