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| author | Ulrich Drepper <drepper@gmail.com> | 2011-10-12 11:27:51 -0400 |
|---|---|---|
| committer | Ulrich Drepper <drepper@gmail.com> | 2011-10-12 11:27:51 -0400 |
| commit | 0ac5ae2335292908f39031b1ea9fe8edce433c0f (patch) | |
| tree | f9d26c8abc0de39d18d4c13e70f6022cdc6b461f /sysdeps/ieee754/ldbl-128ibm/e_sinhl.c | |
| parent | a843a204a3e8a0dd53584dad3668771abaec84ac (diff) | |
| download | glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.zip glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.tar.gz glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.tar.bz2 | |
Optimize libm
libm is now somewhat integrated with gcc's -ffinite-math-only option
and lots of the wrapper functions have been optimized.
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/e_sinhl.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/e_sinhl.c | 23 |
1 files changed, 6 insertions, 17 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c b/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c index 38ae71d..b8e86b1 100644 --- a/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c +++ b/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c @@ -10,18 +10,14 @@ */ -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: e_sinh.c,v 1.7 1995/05/10 20:46:13 jtc Exp $"; -#endif - /* __ieee754_sinh(x) * Method : * mathematically sinh(x) if defined to be (exp(x)-exp(-x))/2 * 1. Replace x by |x| (sinh(-x) = -sinh(x)). * 2. - * E + E/(E+1) + * E + E/(E+1) * 0 <= x <= 22 : sinh(x) := --------------, E=expm1(x) - * 2 + * 2 * * 22 <= x <= lnovft : sinh(x) := exp(x)/2 * lnovft <= x <= ln2ovft: sinh(x) := exp(x/2)/2 * exp(x/2) @@ -35,18 +31,10 @@ static char rcsid[] = "$NetBSD: e_sinh.c,v 1.7 1995/05/10 20:46:13 jtc Exp $"; #include "math.h" #include "math_private.h" -#ifdef __STDC__ static const long double one = 1.0, shuge = 1.0e307; -#else -static long double one = 1.0, shuge = 1.0e307; -#endif -#ifdef __STDC__ - long double __ieee754_sinhl(long double x) -#else - long double __ieee754_sinhl(x) - long double x; -#endif +long double +__ieee754_sinhl(long double x) { long double t,w,h; int64_t ix,jx; @@ -62,7 +50,7 @@ static long double one = 1.0, shuge = 1.0e307; if (jx<0) h = -h; /* |x| in [0,22], return sign(x)*0.5*(E+E/(E+1))) */ if (ix < 0x4036000000000000LL) { /* |x|<22 */ - if (ix<0x3e20000000000000LL) /* |x|<2**-29 */ + if (ix<0x3e20000000000000LL) /* |x|<2**-29 */ if(shuge+x>one) return x;/* sinhl(tiny) = tiny with inexact */ t = __expm1l(fabsl(x)); if(ix<0x3ff0000000000000LL) return h*(2.0*t-t*t/(t+one)); @@ -82,3 +70,4 @@ static long double one = 1.0, shuge = 1.0e307; /* |x| > overflowthresold, sinh(x) overflow */ return x*shuge; } +strong_alias (__ieee754_sinhl, __sinhl_finite) |