r_acos.c

gcc-2.95.3 Linux下最常用的C编译器

#include "f2c.h"

#ifdef KR_headers
double acos();
double r_acos(x) real *x;
#else
#undef abs
#include <math.h>
double r_acos(real *x)
#endif
{
return( acos(*x) );
}