sysdeps/ia64/fpu/s_frexp.c

   1 /* file: frexp.c */
   2
   3
   4 // Copyright (c) 2000-2002, Intel Corporation
   5 // All rights reserved.
   6 //
   7 // Contributed 2/2/2000 by John Harrison, Ted Kubaska, Bob Norin, Shane Story,
   8 // and Ping Tak Peter Tang of the Computational Software Lab, Intel Corporation.
   9 //
  10 // Redistribution and use in source and binary forms, with or without
  11 // modification, are permitted provided that the following conditions are
  12 // met:
  13 //
  14 // * Redistributions of source code must retain the above copyright
  15 // notice, this list of conditions and the following disclaimer.
  16 //
  17 // * Redistributions in binary form must reproduce the above copyright
  18 // notice, this list of conditions and the following disclaimer in the
  19 // documentation and/or other materials provided with the distribution.
  20 //
  21 // * The name of Intel Corporation may not be used to endorse or promote
  22 // products derived from this software without specific prior written
  23 // permission.
  24
  25 //
  26 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  27 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  28 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  29 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS
  30 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  31 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  32 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  33 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  34 // OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
  35 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  36 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 //
  38 // Intel Corporation is the author of this code, and requests that all
  39 // problem reports or change requests be submitted to it directly at
  40 // http://www.intel.com/software/products/opensource/libraries/num.htm.
  41 //
  42 //
  43 // History
  44 //=====================================================================
  45 //  2/02/00  Initial version
  46 //  1/23/02  Calls kernel with parameter to specify 32- or 64-bit int
  47 //
  48 //=====================================================================
  49
  50 #include "libm_support.h"
  51
  52 double __libm_frexp(double, int*, int);
  53
  54 double frexp(double x, int *y)
  55 {
  56
  57 #ifdef SIZE_INT_64
  58    return( __libm_frexp(x, y, 1) );
  59
  60 #else
  61
  62 #ifdef SIZE_INT_32
  63    return( __libm_frexp(x, y, 0) );
  64 #endif
  65
  66 #endif
  67
  68 }