Back to index

glibc  2.9
s_frexp.c
Go to the documentation of this file.
00001 /* file: frexp.c */
00002 
00003 
00004 // Copyright (c) 2000-2002, Intel Corporation
00005 // All rights reserved.
00006 //
00007 // Contributed 2000 by the Intel Numerics Group, Intel Corporation
00008 //
00009 // Redistribution and use in source and binary forms, with or without
00010 // modification, are permitted provided that the following conditions are
00011 // met:
00012 //
00013 // * Redistributions of source code must retain the above copyright
00014 // notice, this list of conditions and the following disclaimer.
00015 //
00016 // * Redistributions in binary form must reproduce the above copyright
00017 // notice, this list of conditions and the following disclaimer in the
00018 // documentation and/or other materials provided with the distribution.
00019 //
00020 // * The name of Intel Corporation may not be used to endorse or promote
00021 // products derived from this software without specific prior written
00022 // permission.
00023 
00024 //
00025 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00026 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
00027 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
00028 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS 
00029 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00030 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00031 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
00032 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
00033 // OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
00034 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00035 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00036 //
00037 // Intel Corporation is the author of this code, and requests that all
00038 // problem reports or change requests be submitted to it directly at
00039 // http://www.intel.com/software/products/opensource/libraries/num.htm.
00040 //
00041 //
00042 // History
00043 //=====================================================================
00044 //  2/02/00  Initial version
00045 //  1/23/02  Calls kernel with parameter to specify 32- or 64-bit int
00046 //
00047 //=====================================================================
00048 
00049 #include "libm_support.h"
00050 
00051 double __libm_frexp(double, int*, int);
00052 
00053 double frexp(double x, int *y)
00054 {
00055 
00056 #ifdef SIZE_INT_64 
00057    return( __libm_frexp(x, y, 1) );
00058 
00059 #else
00060 
00061 #ifdef SIZE_INT_32 
00062    return( __libm_frexp(x, y, 0) );
00063 #endif
00064 
00065 #endif
00066 
00067 }