Open64 (mfef90, whirl2f, and IR tools)
TAG: version-openad; SVN changeset: 916
|
00001 /* 00002 00003 Copyright (C) 2000, 2001 Silicon Graphics, Inc. All Rights Reserved. 00004 00005 This program is free software; you can redistribute it and/or modify it 00006 under the terms of version 2.1 of the GNU Lesser General Public License 00007 as published by the Free Software Foundation. 00008 00009 This program is distributed in the hope that it would be useful, but 00010 WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 00012 00013 Further, this software is distributed without any warranty that it is 00014 free of the rightful claim of any third person regarding infringement 00015 or the like. Any license provided herein, whether implied or 00016 otherwise, applies only to this software file. Patent licenses, if 00017 any, provided herein do not apply to combinations of this program with 00018 other software, or any other product whatsoever. 00019 00020 You should have received a copy of the GNU Lesser General Public 00021 License along with this program; if not, write the Free Software 00022 Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, 00023 USA. 00024 00025 Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pky, 00026 Mountain View, CA 94043, or: 00027 00028 http://www.sgi.com 00029 00030 For further information regarding this notice, see: 00031 00032 http://oss.sgi.com/projects/GenInfo/NoticeExplan 00033 00034 */ 00035 00036 00037 /* $Header: /m_home/m_utkej/Argonne/cvs2svn/cvs/Open64/osprey1.0/libF77/pow_di.c,v 1.1.1.1 2002-05-22 20:09:13 dsystem Exp $ */ 00038 #include <math.h> 00039 #include "cmplrs/host.h" 00040 #include "moremath.h" 00041 00042 double_t __powdi(double_t x, int32 n) 00043 { 00044 double_t pow; 00045 00046 pow = 1; 00047 00048 if(n != 0) 00049 { 00050 if(n < 0) 00051 { 00052 if(x == 0) 00053 { 00054 return(pow); 00055 } 00056 n = -n; 00057 x = 1/x; 00058 } 00059 for( ; ; ) 00060 { 00061 if(n & 01) 00062 pow *= x; 00063 if(n >>= 1) 00064 x *= x; 00065 else 00066 break; 00067 } 00068 } 00069 return(pow); 00070 } 00071 00072 double_t __powdl(double_t x, int64 n) 00073 { 00074 double_t pow; 00075 00076 pow = 1; 00077 00078 if(n != 0) 00079 { 00080 if(n < 0) 00081 { 00082 if(x == 0) 00083 { 00084 return(pow); 00085 } 00086 n = -n; 00087 x = 1/x; 00088 } 00089 for( ; ; ) 00090 { 00091 if(n & 01) 00092 pow *= x; 00093 if(n >>= 1) 00094 x *= x; 00095 else 00096 break; 00097 } 00098 } 00099 return(pow); 00100 } 00101 00102 /* By-reference versions for backward compatibility. */ 00103 00104 double_t pow_di(double_t *ap, int32 *bp) 00105 { 00106 double_t pow; 00107 pow=__powdi(*ap,*bp); 00108 return pow; 00109 } 00110 00111 double_t pow_dl(double_t *ap, int64 *bp) 00112 { 00113 double_t pow; 00114 pow=__powdl(*ap,*bp); 00115 return pow; 00116 }