TARGET = libMath.a
-CFILES = MAT3geom.c MAT3inv.c MAT3mat.c MAT3vec.c polar.c
+CFILES = MAT3geom.c MAT3inv.c MAT3mat.c MAT3vec.c fg_random.c polar.c
OFILES = $(CFILES:.c=.o)
MAT3vec.o:
$(CC) $(CFLAGS) -c $< -o $@
+fg_random.o:
+ $(CC) $(CFLAGS) -c fg_random.c -o $@
+
polar.o:
$(CC) $(CFLAGS) -c polar.c -o $@
#---------------------------------------------------------------------------
# $Log$
+# Revision 1.11 1997/07/30 16:04:08 curt
+# Moved random routines from Utils/ to Math/
+#
# Revision 1.10 1997/07/20 02:19:11 curt
# First stab at a system to generate os2 makefiles automatically.
#
--- /dev/null
+/**************************************************************************
+ * fg_random.c -- routines to handle random number generation
+ *
+ * Written by Curtis Olson, started July 1997.
+ *
+ * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+
+
+#include <stdlib.h> /* for random(), srandom() */
+#include <time.h> /* for time() to seed srandom() */
+
+#include "fg_random.h"
+
+#ifndef USE_RAND
+# ifdef sgi
+# undef RAND_MAX
+# define RAND_MAX 2147483647
+# endif
+#endif
+
+
+/* Seed the random number generater with time() so we don't see the
+ * same sequence every time */
+void fg_srandom(void) {
+#ifdef USE_RAND
+ srand(time(NULL));
+#else
+ srandom(time(NULL));
+#endif
+}
+
+
+/* return a random number between [0.0, 1.0) */
+double fg_random(void) {
+#ifdef USE_RAND
+ return(rand() / (double)RAND_MAX);
+#else
+ return(random() / (double)RAND_MAX);
+#endif
+}
+
+
+/* $Log$
+/* Revision 1.1 1997/07/30 16:04:09 curt
+/* Moved random routines from Utils/ to Math/
+/*
+ * Revision 1.1 1997/07/19 22:31:57 curt
+ * Initial revision.
+ *
+ */
--- /dev/null
+/**************************************************************************
+ * fg_random.h -- routines to handle random number generation
+ *
+ * Written by Curtis Olson, started July 1997.
+ *
+ * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+
+
+#ifndef FG_RANDOM_H
+#define FG_RANDOM_H
+
+
+/* Seed the random number generater with time() so we don't see the
+ * same sequence every time */
+void fg_srandom(void);
+
+/* return a random number between [0.0, 1.0) */
+double fg_random(void);
+
+
+#endif /* FG_RANDOM_H */
+
+
+/* $Log$
+/* Revision 1.1 1997/07/30 16:04:09 curt
+/* Moved random routines from Utils/ to Math/
+/*
+ * Revision 1.2 1997/07/23 21:52:28 curt
+ * Put comments around the text after an #endif for increased portability.
+ *
+ * Revision 1.1 1997/07/19 22:31:57 curt
+ * Initial revision.
+ *
+ */