glibc/sysdeps/ia64/fpu/s_fabs.S

.file "fabs.s"


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//
// Contributed 2000 by the Intel Numerics Group, Intel Corporation
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// 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)