asinl

ASIN(3)			  Linux Programmer’s Manual		      ASIN(3)



NAME
       asin, asinf, asinl - arc sine function

SYNOPSIS
       #include <math.h>

       double asin(double x);

       float asinf(float x);

       long double asinl(long double x);

DESCRIPTION
       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
       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
       EDOM   x is out of range.

CONFORMING TO
       SVID 3, POSIX, BSD 4.3, ISO 9899.  The float and long double  variants
       are C99 requirements.

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



				  2002-07-25			      ASIN(3)