gcc/f/runtime/libF77/r_nint.c

#include "f2c.h"

#ifdef KR_headers
double floor();
double r_nint(x) real *x;
#else
#undef abs
#include <math.h>
double r_nint(real *x)
#endif
{
return( (*x)>=0 ?
	floor(*x + .5) : -floor(.5 - *x) );
}