glibc/sysdeps/ia64/fpu/s_fma.S

.file "fma.s"


// Copyright (c) 2001 - 2003, Intel Corporation
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//
// Contributed 2001 by the Intel Numerics Group, Intel Corporation
//
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// modification, are permitted provided that the following conditions are
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//
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//
// History
//==============================================================
// 06/07/01 Initial version
// 05/20/02 Cleaned up namespace and sf0 syntax
// 02/10/03 Reordered header: .section, .global, .proc, .align
//
// API
//==============================================================
// double fma  (double x, double y, double z)
//
// Overview of operation
//==============================================================
// returns x * y + z with one rounding error

// All the special cases are handled by the fma instruction itself

// floating-point registers used: 3
// f8,  input x, output
// f9,  input y
// f10, input z

.section .text
GLOBAL_LIBM_ENTRY(fma)

{ .mfb
      nop.m 999
      fma.d.s0  f8 = f8, f9, f10  // Result = x * y + z
      br.ret.sptk    b0
}
;;

GLOBAL_LIBM_END(fma)