freebsd-dev/contrib/libf2c/libF77/d_sign.c
1999-09-18 10:51:31 +00:00

13 lines
199 B
C

#include "f2c.h"
#ifdef KR_headers
double d_sign(a,b) doublereal *a, *b;
#else
double d_sign(doublereal *a, doublereal *b)
#endif
{
double x;
x = (*a >= 0 ? *a : - *a);
return( *b >= 0 ? x : -x);
}