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 <errno.h> 00037 #include <inttypes.h> 00038 #include "quad.h" 00039 00040 /* intrinsic QATAND */ 00041 00042 /* by address version only */ 00043 00044 typedef union 00045 { 00046 struct 00047 { 00048 uint32_t hi[2]; 00049 uint32_t lo[2]; 00050 } word; 00051 00052 long double ld; 00053 } ldu; 00054 00055 static const ldu twop109 = 00056 {0x46c00000, 0x00000000, 00057 0x00000000, 0x00000000}; 00058 00059 static const ldu degprad = 00060 {0x404ca5dc, 0x1a63c1f8, 00061 0xbce1e7ab, 0x456405f9}; 00062 00063 long double __q_atand(long double *x) 00064 { 00065 ldquad u; 00066 long double result; 00067 00068 u.ld = *x; 00069 00070 if ( u.q.hi != u.q.hi ) 00071 { 00072 /* x is a NaN; return a quiet NaN */ 00073 00074 #ifdef _IP_NAN_SETS_ERRNO 00075 00076 *__errnoaddr = EDOM; 00077 #endif 00078 return ( __libm_qnan_ld ); 00079 } 00080 00081 if ( *x == 0.0L ) 00082 return ( 0.0L ); 00083 00084 if ( __qabs(*x) < twop109.ld ) 00085 { 00086 /* |*x| < 2^109 */ 00087 00088 result = __qatan(*x); 00089 00090 return ( result*degprad.ld ); 00091 } 00092 00093 if ( *x > 0.0L ) 00094 return ( 90.0L ); 00095 00096 return ( -90.0L ); 00097 } 00098