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| author | Richard Henderson <rth@redhat.com> | 2007-03-14 17:44:14 +0000 |
|---|---|---|
| committer | Richard Henderson <rth@redhat.com> | 2007-03-14 17:44:14 +0000 |
| commit | aea1d19e2f2f6f1b95521c8fbbbddfb92097db60 (patch) | |
| tree | 065a8ec8487c1e556ad760abaeb1ee6d3572d2f9 /sysdeps/alpha/fpu/s_rint.c | |
| parent | 9e43b50d490b396c8eb1b0a19e3bc1037487f029 (diff) | |
| download | glibc-aea1d19e2f2f6f1b95521c8fbbbddfb92097db60.tar.gz glibc-aea1d19e2f2f6f1b95521c8fbbbddfb92097db60.tar.xz glibc-aea1d19e2f2f6f1b95521c8fbbbddfb92097db60.zip | |
* sysdeps/alpha/fpu/s_ceil.c: Rewrite without branches.
* sysdeps/alpha/fpu/s_ceilf.c: Likewise. * sysdeps/alpha/fpu/s_floor.c: Likewise. * sysdeps/alpha/fpu/s_floorf.c: Likewise. * sysdeps/alpha/fpu/s_rint.c: Likewise. * sysdeps/alpha/fpu/s_rintf.c: Likewise. * sysdeps/alpha/fpu/s_fmax.S: New file. * sysdeps/alpha/fpu/s_fmaxf.S: New file. * sysdeps/alpha/fpu/s_fmin.S: New file. * sysdeps/alpha/fpu/s_fminf.S: New file. * sysdeps/alpha/fpu/s_isnan.c: New file. * sysdeps/alpha/fpu/s_isnanf.c: New file. * sysdeps/alpha/fpu/s_llrint.c: New file. * sysdeps/alpha/fpu/s_llrintf.c: New file. * sysdeps/alpha/fpu/s_lrint.c: New file. * sysdeps/alpha/fpu/s_lrintf.c: New file. * sysdeps/alpha/fpu/s_nearbyint.c: New file. * sysdeps/alpha/fpu/s_nearbyintf.c: New file. * sysdeps/alpha/fpu/bits/mathinline.h (__floorf, __floor): Remove. (__fdimf, fdimf, __fdim, fdim): Remove. (__signbitf, __signbit, __signbitl): Use gcc builtin if available. (__isnanf, __isnan, __isnanl): New. 2007-03-14 Richard Henderson <rth@redhat.com> * sysdeps/alpha/fpu/s_ceil.c: Rewrite without branches. * sysdeps/alpha/fpu/s_ceilf.c: Likewise. * sysdeps/alpha/fpu/s_floor.c: Likewise. * sysdeps/alpha/fpu/s_floorf.c: Likewise. * sysdeps/alpha/fpu/s_rint.c: Likewise. * sysdeps/alpha/fpu/s_rintf.c: Likewise. * sysdeps/alpha/fpu/s_fmax.S: New file. * sysdeps/alpha/fpu/s_fmaxf.S: New file. * sysdeps/alpha/fpu/s_fmin.S: New file. * sysdeps/alpha/fpu/s_fminf.S: New file. * sysdeps/alpha/fpu/s_isnan.c: New file. * sysdeps/alpha/fpu/s_isnanf.c: New file. * sysdeps/alpha/fpu/s_llrint.c: New file. * sysdeps/alpha/fpu/s_llrintf.c: New file. * sysdeps/alpha/fpu/s_lrint.c: New file. * sysdeps/alpha/fpu/s_lrintf.c: New file. * sysdeps/alpha/fpu/s_nearbyint.c: New file. * sysdeps/alpha/fpu/s_nearbyintf.c: New file. * sysdeps/alpha/fpu/bits/mathinline.h (__floorf, __floor): Remove. (__fdimf, fdimf, __fdim, fdim): Remove. (__signbitf, __signbit, __signbitl): Use gcc builtin if available. (__isnanf, __isnan, __isnanl): New.
Diffstat (limited to 'sysdeps/alpha/fpu/s_rint.c')
| -rw-r--r-- | sysdeps/alpha/fpu/s_rint.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/sysdeps/alpha/fpu/s_rint.c b/sysdeps/alpha/fpu/s_rint.c index be09651b35..e9aa028822 100644 --- a/sysdeps/alpha/fpu/s_rint.c +++ b/sysdeps/alpha/fpu/s_rint.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2000, 2006 Free Software Foundation, Inc. +/* Copyright (C) 2000, 2006, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson. @@ -24,24 +24,15 @@ double __rint (double x) { - if (isless (fabs (x), 9007199254740992.0)) /* 1 << DBL_MANT_DIG */ - { - double tmp1, new_x; - __asm ( -#ifdef _IEEE_FP_INEXACT - "cvttq/svid %2,%1\n\t" -#else - "cvttq/svd %2,%1\n\t" -#endif - "cvtqt/d %1,%0\n\t" - : "=f"(new_x), "=&f"(tmp1) - : "f"(x)); - - /* rint(-0.1) == -0, and in general we'll always have the same - sign as our input. */ - x = copysign(new_x, x); - } - return x; + double two52 = copysign (0x1.0p52, x); + double r; + + r = x + two52; + r = r - two52; + + /* rint(-0.1) == -0, and in general we'll always have the same sign + as our input. */ + return copysign (r, x); } weak_alias (__rint, rint) |