xref: /original-bsd/usr.bin/pascal/libpc/EXP.c (revision 014fe330)
1 /* Copyright (c) 1982 Regents of the University of California */
2 
3 static char sccsid[] = "@(#)EXP.c 1.1 02/08/82";
4 
5 #include <math.h>
6 extern int errno;
7 
8 double
9 EXP(value)
10 	double	value;
11 {
12 	double result;
13 
14 	errno = 0;
15 	result = exp(value);
16 	if (errno != 0) {
17 		ERROR("exp(%e) yields a result that is out of the range of reals\n", value);
18 		return;
19 	}
20 	return result;
21 }
22