From aea1d19e2f2f6f1b95521c8fbbbddfb92097db60 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Wed, 14 Mar 2007 17:44:14 +0000 Subject: * 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 * 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. --- sysdeps/alpha/fpu/s_floorf.c | 35 +++++++++++++---------------------- 1 file changed, 13 insertions(+), 22 deletions(-) (limited to 'sysdeps/alpha/fpu/s_floorf.c') diff --git a/sysdeps/alpha/fpu/s_floorf.c b/sysdeps/alpha/fpu/s_floorf.c index fd1ddab6be..2283264e27 100644 --- a/sysdeps/alpha/fpu/s_floorf.c +++ b/sysdeps/alpha/fpu/s_floorf.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc. +/* Copyright (C) 1998, 1999, 2000, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson. @@ -27,30 +27,21 @@ float __floorf (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" + float two23 = copysignf (0x1.0p23, x); + float r, tmp; + + __asm ( #ifdef _IEEE_FP_INEXACT - "cvttq/svim %2,%1\n\t" + "adds/suim %2, %3, %1\n\tsubs/suim %1, %3, %0" #else - "cvttq/svm %2,%1\n\t" + "adds/sum %2, %3, %1\n\tsubs/sum %1, %3, %0" #endif - "cvtqt/m %1,%0\n\t" - : "=f"(new_x), "=&f"(tmp1), "=&f"(tmp2) - : "f"(x)); - - /* floor(-0) == -0, and in general we'll always have the same - sign as our input. */ - x = copysignf(new_x, x); - } - return x; + : "=&f"(r), "=&f"(tmp) + : "f"(x), "f"(two23)); + + /* floor(-0) == -0, and in general we'll always have the same + sign as our input. */ + return copysignf (r, x); } weak_alias (__floorf, floorf) -- cgit 1.4.1