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glibc  2.9
s_ldexp.c
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00001 /* file: ldexp.c */
00002 
00003 
00004 // Copyright (c) 2000, 2001, 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 
00043 #include "libm_support.h"
00044 
00045 double __libm_ldexp(double, int, int);
00046 
00047 
00048 double ldexp(double x, int n)
00049 {
00050 
00051 #ifdef SIZE_INT_64 
00052    return __libm_ldexp(x,n,1);  
00053 #else
00054 
00055 #ifdef SIZE_INT_32 
00056    return __libm_ldexp(x,n,0);
00057 #endif
00058 
00059 #endif
00060 
00061 }