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 #pragma ident "@(#) libf/pxf/pxfclearenv.c 92.1 06/29/99 11:36:06" 00038 00039 #include <fortran.h> 00040 #include <errno.h> 00041 #include <liberrno.h> 00042 #include <malloc.h> 00043 00044 #ifndef _UNICOS 00045 #include <stddef.h> 00046 #endif 00047 00048 #if defined(BUILD_OS_DARWIN) 00049 extern char **environ; 00050 #else /* defined(BUILD_OS_DARWIN) */ 00051 extern char **_environ; 00052 #endif /* defined(BUILD_OS_DARWIN) */ 00053 00054 /* 00055 * PXFCLEARENV -- clear all environment variables 00056 * (section 4.6.1 of Posix 1003.9-1992) 00057 * 00058 * Call from Fortran: 00059 * 00060 * SUBROUTINE PXFCLEARENV(IERROR) 00061 * INTERGER IERROR 00062 * 00063 * Where: 00064 * 00065 * IERROR is an output integer variable that will contain 00066 * the status: 00067 * 00068 * zero - all environment variables were cleared. 00069 * 00070 */ 00071 00072 #ifdef _UNICOS 00073 void 00074 PXFCLEARENV( 00075 #else 00076 void 00077 _PXFCLEARENV( 00078 #endif 00079 _f_int *IERROR 00080 ) 00081 { 00082 int i; 00083 00084 #if defined(BUILD_OS_DARWIN) 00085 for(i=0; environ[i] != NULL; i++) { 00086 environ[i] = NULL; 00087 } 00088 #else /* defined(BUILD_OS_DARWIN) */ 00089 for(i=0; _environ[i] != NULL; i++) { 00090 _environ[i] = NULL; 00091 } 00092 #endif /* defined(BUILD_OS_DARWIN) */ 00093 00094 *IERROR = 0; 00095 } 00096 00097 #ifndef _UNICOS 00098 void 00099 pxfclearenv_( 00100 _f_int *IERROR 00101 ) 00102 { 00103 _PXFCLEARENV(IERROR); 00104 } 00105 #endif 00106 00107 00108 00109 00110
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