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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-96/e_lgammal_r.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-96/e_lgammal_r.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-96/e_lgammal_r.c | 30 |
1 files changed, 5 insertions, 25 deletions
diff --git a/sysdeps/ieee754/ldbl-96/e_lgammal_r.c b/sysdeps/ieee754/ldbl-96/e_lgammal_r.c index 36e336565c..8a20e5e135 100644 --- a/sysdeps/ieee754/ldbl-96/e_lgammal_r.c +++ b/sysdeps/ieee754/ldbl-96/e_lgammal_r.c @@ -94,11 +94,7 @@ #include "math.h" #include "math_private.h" -#ifdef __STDC__ static const long double -#else -static long double -#endif half = 0.5L, one = 1.0L, pi = 3.14159265358979323846264L, @@ -204,20 +200,10 @@ static long double w6 = -1.880801938119376907179E-3L, w7 = 4.885026142432270781165E-3L; -#ifdef __STDC__ static const long double zero = 0.0L; -#else -static long double zero = 0.0L; -#endif -#ifdef __STDC__ static long double sin_pi (long double x) -#else -static long double -sin_pi (x) - long double x; -#endif { long double y, z; int n, ix; @@ -283,15 +269,8 @@ sin_pi (x) } -#ifdef __STDC__ long double __ieee754_lgammal_r (long double x, int *signgamp) -#else -long double -__ieee754_lgammal_r (x, signgamp) - long double x; - int *signgamp; -#endif { long double t, y, z, nadj, p, p1, p2, q, r, w; int i, ix; @@ -301,7 +280,7 @@ __ieee754_lgammal_r (x, signgamp) GET_LDOUBLE_WORDS (se, i0, i1, x); ix = se & 0x7fff; - if ((ix | i0 | i1) == 0) + if (__builtin_expect((ix | i0 | i1) == 0, 0)) { if (se & 0x8000) *signgamp = -1; @@ -311,10 +290,10 @@ __ieee754_lgammal_r (x, signgamp) ix = (ix << 16) | (i0 >> 16); /* purge off +-inf, NaN, +-0, and negative arguments */ - if (ix >= 0x7fff0000) + if (__builtin_expect(ix >= 0x7fff0000, 0)) return x * x; - if (ix < 0x3fc08000) /* 2^-63 */ + if (__builtin_expect(ix < 0x3fc08000, 0)) /* 2^-63 */ { /* |x|<2**-63, return -log(|x|) */ if (se & 0x8000) { @@ -438,7 +417,7 @@ __ieee754_lgammal_r (x, signgamp) z = one / x; y = z * z; w = w0 + z * (w1 - + y * (w2 + y * (w3 + y * (w4 + y * (w5 + y * (w6 + y * w7)))))); + + y * (w2 + y * (w3 + y * (w4 + y * (w5 + y * (w6 + y * w7)))))); r = (x - half) * (t - one) + w; } else @@ -448,3 +427,4 @@ __ieee754_lgammal_r (x, signgamp) r = nadj - r; return r; } +strong_alias (__ieee754_lgammal_r, __lgammal_r_finite) |