| .file "fabs.s" |
| |
| |
| // Copyright (c) 2000 - 2003, Intel Corporation |
| // All rights reserved. |
| // |
| // Contributed 2000 by the Intel Numerics Group, Intel Corporation |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // |
| // * 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. |
| // |
| // * 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 |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS |
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| // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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| // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| // |
| // 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. |
| // |
| // History |
| //============================================================== |
| // 02/02/00 Initial version |
| // 02/07/02 Added __libm_fabs entry point to test in case compiler inlines |
| // 05/20/02 Cleaned up namespace and sf0 syntax |
| // 02/10/03 Reordered header: .section, .global, .proc, .align |
| // |
| // API |
| //============================================================== |
| // double fabs (double x) |
| // |
| // Overview of operation |
| //============================================================== |
| // returns absolute value of x |
| |
| // floating-point registers used: 1 |
| // f8, input |
| |
| .section .text |
| .global __libm_fabs# |
| |
| .proc __libm_fabs# |
| __libm_fabs: |
| .endp __libm_fabs# |
| |
| GLOBAL_IEEE754_ENTRY(fabs) |
| |
| // set invalid or denormal flags and take fault if |
| // necessary |
| |
| { .mfi |
| nop.m 999 |
| fcmp.eq.unc.s0 p6,p7 = f8,f1 |
| nop.i 999 ;; |
| } |
| |
| { .mfb |
| nop.m 999 |
| fmerge.s f8 = f0,f8 |
| br.ret.sptk b0 ;; |
| } |
| |
| GLOBAL_IEEE754_END(fabs) |
