Open64 (mfef90, whirl2f, and IR tools)
TAG: version-openad; SVN changeset: 916
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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 of the GNU General Public License as 00007 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 General Public License along 00021 with this program; if not, write the Free Software Foundation, Inc., 59 00022 Temple Place - Suite 330, Boston MA 02111-1307, USA. 00023 00024 Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pky, 00025 Mountain View, CA 94043, or: 00026 00027 http://www.sgi.com 00028 00029 For further information regarding this notice, see: 00030 00031 http://oss.sgi.com/projects/GenInfo/NoticeExplan 00032 00033 */ 00034 00035 00036 #include "cmplrs/host.h" 00037 #include "qcmplx.h" 00038 #include "cq_div.h" 00039 00040 qcomplex __powcqi(long double aqreal, long double aqimag, int32 n) /* __powcqi = a**n */ 00041 { 00042 long double t; 00043 qcomplex x, p; 00044 00045 p.qreal = 1; 00046 p.qimag = 0; 00047 00048 if(n == 0) 00049 return p; 00050 00051 if(n < 0) { 00052 n = -n; 00053 x = __cqdiv(p.qreal, p.qimag, aqreal, aqimag); 00054 } else { 00055 x.qreal = aqreal; 00056 x.qimag = aqimag; 00057 } 00058 00059 for( ; ; ) { 00060 if(n & 01) { 00061 t = p.qreal * x.qreal - p.qimag * x.qimag; 00062 p.qimag = p.qreal * x.qimag + p.qimag * x.qreal; 00063 p.qreal = t; 00064 } 00065 if(n >>= 1) { 00066 t = x.qreal * x.qreal - x.qimag * x.qimag; 00067 x.qimag = 2 * x.qreal * x.qimag; 00068 x.qreal = t; 00069 } else { 00070 break; 00071 } 00072 } 00073 return p; 00074 } 00075 00076 qcomplex __powcql(long double aqreal, long double aqimag, int64 n) /* __powcql = a**n */ 00077 { 00078 long double t; 00079 qcomplex x, p; 00080 00081 p.qreal = 1; 00082 p.qimag = 0; 00083 00084 if(n == 0) 00085 return p; 00086 00087 if(n < 0) { 00088 n = -n; 00089 x = __cqdiv(p.qreal, p.qimag, aqreal, aqimag); 00090 } else { 00091 x.qreal = aqreal; 00092 x.qimag = aqimag; 00093 } 00094 00095 for( ; ; ) { 00096 if(n & 01) { 00097 t = p.qreal * x.qreal - p.qimag * x.qimag; 00098 p.qimag = p.qreal * x.qimag + p.qimag * x.qreal; 00099 p.qreal = t; 00100 } 00101 if(n >>= 1) { 00102 t = x.qreal * x.qreal - x.qimag * x.qimag; 00103 x.qimag = 2 * x.qreal * x.qimag; 00104 x.qreal = t; 00105 } else { 00106 break; 00107 } 00108 } 00109 return p; 00110 } 00111 00112 void __pow_cqi(qcomplex *p, qcomplex *a, int32 *b) /* p = a**b */ 00113 { 00114 *p = __powcqi(a->qreal, a->qimag, *b); 00115 } 00116 00117 void __pow_cql(qcomplex *p, qcomplex *a, int64 *b) /* p = a**b */ 00118 { 00119 *p = __powcql(a->qreal, a->qimag, *b); 00120 }