2.9BSD - /usr/src/lib/libF77/r_atan.c

   1: /*
   2:  *	"@(#)r_atan.c	1.1"
   3:  */
   4: 
   5: double r_atan(x)
   6: float *x;
   7: {
   8: double atan();
   9: return( atan(*x) );
  10: }

Defined functions