DragonFly On-Line Manual Pages

ASIN(3)               DragonFly Library Functions Manual               ASIN(3)

NAME
     asin, asinf, asinl -- arc sine functions

SYNOPSIS
     #include <math.h>

     double
     asin(double x);

     float
     asinf(float x);

     long double
     asinl(long double x);

DESCRIPTION
     The asin() function computes the principal value of the arc sine of x in
     the range [-pi/2, +pi/2].  The asinf() function is a single precision
     version of asin().  The asinl() function is an extended precision version
     of asin().

RETURN VALUES
     If |x|>1, asin(x), asinf(x) and asinl(x) return NaN and set the global
     variable errno to EDOM.

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

DragonFly 4.1                  November 3, 2013                  DragonFly 4.1