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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_hypotl.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_hypotl.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/e_hypotl.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/e_hypotl.c b/sysdeps/ieee754/ldbl-128ibm/e_hypotl.c index 4330f28..4ef0767 100644 --- a/sysdeps/ieee754/ldbl-128ibm/e_hypotl.c +++ b/sysdeps/ieee754/ldbl-128ibm/e_hypotl.c @@ -10,10 +10,6 @@ * ==================================================== */ -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: e_hypotl.c,v 1.9 1995/05/12 04:57:27 jtc Exp $"; -#endif - /* __ieee754_hypotl(x,y) * * Method : @@ -42,8 +38,8 @@ static char rcsid[] = "$NetBSD: e_hypotl.c,v 1.9 1995/05/12 04:57:27 jtc Exp $"; * hypotl(x,y) is NAN if x or y is NAN. * * Accuracy: - * hypotl(x,y) returns sqrtl(x^2+y^2) with error less - * than 1 ulps (units in the last place) + * hypotl(x,y) returns sqrtl(x^2+y^2) with error less + * than 1 ulps (units in the last place) */ #include "math.h" @@ -52,12 +48,8 @@ static char rcsid[] = "$NetBSD: e_hypotl.c,v 1.9 1995/05/12 04:57:27 jtc Exp $"; static const long double two600 = 0x1.0p+600L; static const long double two1022 = 0x1.0p+1022L; -#ifdef __STDC__ - long double __ieee754_hypotl(long double x, long double y) -#else - long double __ieee754_hypotl(x,y) - long double x, y; -#endif +long double +__ieee754_hypotl(long double x, long double y) { long double a,b,t1,t2,y1,y2,w,kld; int64_t j,k,ha,hb; @@ -93,7 +85,7 @@ static const long double two1022 = 0x1.0p+1022L; } if(hb < 0x20b0000000000000LL) { /* b < 2**-500 */ if(hb <= 0x000fffffffffffffLL) { /* subnormal b or 0 */ - u_int64_t low; + u_int64_t low; GET_LDOUBLE_LSW64(low,b); if((hb|(low&0x7fffffffffffffffLL))==0) return a; t1=two1022; /* t1=2^1022 */ @@ -102,7 +94,7 @@ static const long double two1022 = 0x1.0p+1022L; k -= 1022; kld = kld / two1022; } else { /* scale a and b by 2^600 */ - ha += 0x2580000000000000LL; /* a *= 2^600 */ + ha += 0x2580000000000000LL; /* a *= 2^600 */ hb += 0x2580000000000000LL; /* b *= 2^600 */ k -= 600; a *= two600; @@ -129,3 +121,4 @@ static const long double two1022 = 0x1.0p+1022L; else return w; } +strong_alias (__ieee754_hypotl, __hypotl_finite) |