diff options
| 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_rintf.c | |
| parent | 9e43b50d490b396c8eb1b0a19e3bc1037487f029 (diff) | |
| download | glibc-aea1d19e2f2f6f1b95521c8fbbbddfb92097db60.zip glibc-aea1d19e2f2f6f1b95521c8fbbbddfb92097db60.tar.gz glibc-aea1d19e2f2f6f1b95521c8fbbbddfb92097db60.tar.bz2 | |
* 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_rintf.c')
| -rw-r--r-- | sysdeps/alpha/fpu/s_rintf.c | 35 |
1 files changed, 10 insertions, 25 deletions
diff --git a/sysdeps/alpha/fpu/s_rintf.c b/sysdeps/alpha/fpu/s_rintf.c index d5d019d..9e4cbd1 100644 --- a/sysdeps/alpha/fpu/s_rintf.c +++ b/sysdeps/alpha/fpu/s_rintf.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2000 Free Software Foundation, Inc. +/* Copyright (C) 2000, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson. @@ -23,30 +23,15 @@ float __rintf (float x) { - if (isless (fabsf (x), 16777216.0f)) /* 1 << FLT_MANT_DIG */ - { - /* Note that Alpha S_Floating is stored in registers in a - restricted T_Floating format, so we don't even need to - convert back to S_Floating in the end. The initial - conversion to T_Floating is needed to handle denormals. */ - - float tmp1, tmp2, new_x; - - __asm ("cvtst/s %3,%2\n\t" -#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"(tmp2) - : "f"(x)); - - /* rint(-0.1) == -0, and in general we'll always have the same - sign as our input. */ - x = copysignf(new_x, x); - } - return x; + float two23 = copysignf (0x1.0p23, x); + float r; + + r = x + two23; + r = r - two23; + + /* rint(-0.1) == -0, and in general we'll always have the same sign + as our input. */ + return copysign (r, x); } weak_alias (__rintf, rintf) |