1 #ifdef HAVE_STDLIB_H
2 #include <stdlib.h>
3 #endif
4 #include <math.h>
5 #include "yagi.h"
6 
ci(double x)7 double ci(double x)			/* cosine integral */
8 {
9 	double null, result;
10 
11 	cisi(x, &result, &null);
12 	return(result);
13 }
14