#include "private.h"
#include <ctype.h>
-#include <gsl/gsl_math.h>
#include <libpspp/assertion.h>
#include <libpspp/message.h>
#include "helpers.h"
break;
case OP_return_number:
- *(double *) result = gsl_finite (ns[-1]) ? ns[-1] : SYSMIS;
+ *(double *) result = isfinite (ns[-1]) ? ns[-1] : SYSMIS;
return;
case OP_return_string: