NAME    [Toc]    [Back]

       asin - arc sine function

SYNOPSIS    [Toc]    [Back]

       #include <math.h>

       double asin(double x);

DESCRIPTION    [Toc]    [Back]

       The  asin()  function  calculates  the arc sine of x; that is the value
       whose sine is x.  If x falls outside the range -1 to  1,  asin()  fails
       and errno is set.

RETURN VALUE    [Toc]    [Back]

       The  asin()  function  returns the arc sine in radians and the value is
       mathematically defined to be between -PI/2 and PI/2 (inclusive).

ERRORS    [Toc]    [Back]

       EDOM   x is out of range.

CONFORMING TO    [Toc]    [Back]

       SVID 3, POSIX, BSD 4.3, ISO 9899

SEE ALSO    [Toc]    [Back]

       acos(3), atan(3), atan2(3), cos(3), sin(3), tan(3)



				  1993-06-08			       ASIN(3)