17 lines
317 B
C
17 lines
317 B
C
#ifndef lint
|
|
static char sccsid[] = "@(#)d_acosd.c 1.1 92/07/30 SMI"; /* from UCB 1.1" */
|
|
#endif
|
|
/*
|
|
* VMS Fortran compatibility function:
|
|
* arc cosine in degrees.
|
|
*/
|
|
|
|
#include <math.h>
|
|
static double pitod = 57.2957795130823208767981548141; /* 180/pi */
|
|
|
|
double d_acosd(x)
|
|
double *x;
|
|
{
|
|
return pitod*acos(*x);
|
|
}
|