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author | stefanf <stefanf@FreeBSD.org> | 2004-06-20 10:42:23 +0000 |
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committer | stefanf <stefanf@FreeBSD.org> | 2004-06-20 10:42:23 +0000 |
commit | bcffee208f3017076a5d0f6bb8ae3a0ae9802b18 (patch) | |
tree | 994bb8d18e4957fcf31a6e4f358f8d6d74c78a63 /lib/msun/i387 | |
parent | 2e83c4463aed31652e854eeb15b0ac72b90cf9cf (diff) | |
download | FreeBSD-src-bcffee208f3017076a5d0f6bb8ae3a0ae9802b18.zip FreeBSD-src-bcffee208f3017076a5d0f6bb8ae3a0ae9802b18.tar.gz |
Completely remove s_ilogb.S as the assembler implementation gives very little
speed improvement to none at all over the MI version.
Submitted by: bde
Diffstat (limited to 'lib/msun/i387')
-rw-r--r-- | lib/msun/i387/s_ilogb.S | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/lib/msun/i387/s_ilogb.S b/lib/msun/i387/s_ilogb.S deleted file mode 100644 index 34497a8..0000000 --- a/lib/msun/i387/s_ilogb.S +++ /dev/null @@ -1,83 +0,0 @@ -/* - * Copyright (c) 1994 Winning Strategies, Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Winning Strategies, Inc. - * 4. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/* - * Written by: - * J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc. - */ - -#include <machine/_limits.h> -#include <machine/asm.h> - -RCSID("$FreeBSD$") - -#define FP_ILOGB0 (-__INT_MAX) -#define FP_ILOGBNAN __INT_MAX -#define FP_ILOGBINF __INT_MAX - -ENTRY(ilogb) - pushl %ebp - movl %esp,%ebp - subl $4,%esp - - fldl 8(%ebp) - fxtract - fstp %st(0) - - fistpl -4(%ebp) - movl -4(%ebp),%eax - - /* fistpl yields __INT_MIN for NaN, Inf and 0. */ - cmpl $__INT_MIN,%eax - je .L2 - -.L1: - leave - ret - -.L2: - fldl 8(%ebp) - fldz - fucompp - fnstsw %ax - sahf - jp .L3 - jz .L4 - - movl $FP_ILOGBINF,%eax - jmp .L1 - -.L3: - movl $FP_ILOGBNAN,%eax - jmp .L1 - -.L4: - movl $FP_ILOGB0,%eax - jmp .L1 |