diff options
Diffstat (limited to 'sysdeps/ia64/fpu/s_significand.S')
| -rw-r--r-- | sysdeps/ia64/fpu/s_significand.S | 61 |
1 files changed, 34 insertions, 27 deletions
diff --git a/sysdeps/ia64/fpu/s_significand.S b/sysdeps/ia64/fpu/s_significand.S index 720e043e5c..84141daf4d 100644 --- a/sysdeps/ia64/fpu/s_significand.S +++ b/sysdeps/ia64/fpu/s_significand.S @@ -1,10 +1,10 @@ .file "significand.s" - -// Copyright (c) 2000 - 2003, Intel Corporation +// Copyright (C) 2000, 2001, Intel Corporation // All rights reserved. -// -// Contributed 2000 by the Intel Numerics Group, Intel Corporation +// +// Contributed 2/2/2000 by John Harrison, Ted Kubaska, Bob Norin, Shane Story, +// and Ping Tak Peter Tang of the Computational Software Lab, Intel Corporation. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are @@ -20,7 +20,7 @@ // * The name of Intel Corporation may not be used to endorse or promote // products derived from this software without specific prior written // permission. - +// // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR @@ -35,15 +35,13 @@ // // Intel Corporation is the author of this code, and requests that all // problem reports or change requests be submitted to it directly at -// http://www.intel.com/software/products/opensource/libraries/num.htm. +// http://developer.intel.com/opensource. // // History //============================================================== -// 02/02/00 Initial version -// 04/04/00 Unwind support added -// 05/31/00 Fixed bug when x a double-extended denormal -// 05/20/02 Cleaned up namespace and sf0 syntax -// 02/10/03 Reordered header: .section, .global, .proc, .align +// 2/02/00: Initial version +// 4/04/00 Unwind support added +// 5/31/00: Fixed bug when x a double-extended denormal // // API //============================================================== @@ -58,10 +56,18 @@ // p6, p7 // // floating-point registers used: -// f8, f9, f10 +// f8, f9, f10 + +#include "libm_support.h" + +.align 32 +.global significand# .section .text -GLOBAL_LIBM_ENTRY(significand) +.proc significand# +.align 32 + +significand: // qnan snan inf norm unorm 0 -+ // 1 1 1 0 0 1 11 @@ -69,19 +75,19 @@ GLOBAL_LIBM_ENTRY(significand) // f10 gets f8(sign) with f1(exp,significand) { .mfi nop.m 999 - fmerge.s f10 = f8,f1 +(p0) fmerge.s f10 = f8,f1 nop.i 999 } { .mfi nop.m 999 - fnorm.s0 f9 = f8 +(p0) fnorm f9 = f8 nop.i 999 ;; } // Test for denormal input { .mfi nop.m 999 - fclass.m.unc p7,p0 = f8, 0x0b +(p0) fclass.m.unc p7,p0 = f8, 0x0b nop.i 999 ;; } @@ -91,14 +97,14 @@ GLOBAL_LIBM_ENTRY(significand) // return sign(f8) exp(f8) significand(f8), normalized. { .mfi nop.m 999 - fclass.m.unc p0,p6 = f8, 0xe7 +(p0) fclass.m.unc p0,p6 = f8, 0xe7 nop.i 999 ;; } { .mmb nop.m 999 nop.m 999 -(p7) br.cond.spnt SIGNIFICAND_DENORM ;; // Branch if x denormal +(p7) br.cond.spnt L(SIGNIFICAND_DENORM) ;; // Branch if x denormal } { .mfi @@ -109,29 +115,29 @@ GLOBAL_LIBM_ENTRY(significand) { .mfb nop.m 999 - fnorm.d.s0 f8 = f8 - br.ret.sptk b0 ;; +(p0) fnorm.d f8 = f8 +(p0) br.ret.sptk b0 ;; } -SIGNIFICAND_DENORM: +L(SIGNIFICAND_DENORM): // Here if x denorm { .mfi nop.m 999 - fmerge.se f8 = f10,f9 +(p0) fmerge.se f8 = f10,f9 nop.i 999 ;; } // Check if fnorm(x) still denormal, means x double-extended denormal { .mfi nop.m 999 - fclass.m.unc p7,p0 = f9, 0x0b +(p0) fclass.m.unc p7,p0 = f9, 0x0b nop.i 999 ;; } // This will be the final result unless x double-extended denormal { .mfi nop.m 999 - fnorm.d.s0 f8 = f8 +(p0) fnorm.d f8 = f8 nop.i 999 ;; } @@ -146,8 +152,9 @@ SIGNIFICAND_DENORM: // Final normalization if x double-extended denorm { .mfb nop.m 999 -(p7) fnorm.d.s0 f8 = f8 - br.ret.sptk b0 ;; +(p7) fnorm.d f8 = f8 +(p0) br.ret.sptk b0 ;; } -GLOBAL_LIBM_END(significand) +.endp significand +ASM_SIZE_DIRECTIVE(significand) |