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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_atanhl.c | |
| parent | a843a204a3e8a0dd53584dad3668771abaec84ac (diff) | |
| download | glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.tar.gz glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.tar.xz glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.zip | |
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_atanhl.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/e_atanhl.c | 25 |
1 files changed, 5 insertions, 20 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/e_atanhl.c b/sysdeps/ieee754/ldbl-128ibm/e_atanhl.c index a801bd6f74..c879e4518e 100644 --- a/sysdeps/ieee754/ldbl-128ibm/e_atanhl.c +++ b/sysdeps/ieee754/ldbl-128ibm/e_atanhl.c @@ -10,10 +10,6 @@ * ==================================================== */ -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: e_atanh.c,v 1.8 1995/05/10 20:44:55 jtc Exp $"; -#endif - /* __ieee754_atanh(x) * Method : * 1.Reduced x to positive by atanh(-x) = -atanh(x) @@ -22,7 +18,7 @@ static char rcsid[] = "$NetBSD: e_atanh.c,v 1.8 1995/05/10 20:44:55 jtc Exp $"; * atanh(x) = --- * log(1 + -------) = 0.5 * log1p(2 * --------) * 2 1 - x 1 - x * - * For x<0.5 + * For x<0.5 * atanh(x) = 0.5*log1p(2x+2x*x/(1-x)) * * Special cases: @@ -35,24 +31,12 @@ static char rcsid[] = "$NetBSD: e_atanh.c,v 1.8 1995/05/10 20:44:55 jtc Exp $"; #include "math.h" #include "math_private.h" -#ifdef __STDC__ static const long double one = 1.0L, huge = 1e300L; -#else -static long double one = 1.0L, huge = 1e300L; -#endif -#ifdef __STDC__ static const long double zero = 0.0L; -#else -static long double zero = 0.0L; -#endif -#ifdef __STDC__ - long double __ieee754_atanhl(long double x) -#else - long double __ieee754_atanhl(x) - long double x; -#endif +long double +__ieee754_atanhl(long double x) { long double t; int64_t hx,ix; @@ -61,7 +45,7 @@ static long double zero = 0.0L; ix = hx&0x7fffffffffffffffLL; if (ix >= 0x3ff0000000000000LL) { /* |x|>=1 */ if (ix > 0x3ff0000000000000LL) - return (x-x)/(x-x); + return (x-x)/(x-x); t = fabsl (x); if (t > one) return (x-x)/(x-x); @@ -77,3 +61,4 @@ static long double zero = 0.0L; t = 0.5*__log1pl((x+x)/(one-x)); if(hx>=0) return t; else return -t; } +strong_alias (__ieee754_atanhl, __atanhl_finite) |