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 4.3 November 3, 2013 DragonFly 4.3