ASIN(3)

NAME
asin - arc sine function

LIBRARY
libm

SYNOPSIS
#include <math.h>
double
asin(double x);
float
asinf(float x);

DESCRIPTION
The asin() and asinf() functions compute the principal value of the arc sine of x in the range [-/2, +/2].

RETURN VALUES
If |x|>1, asin(x) and asinf(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), math(3)

STANDARDS
The asin() function conforms to ansiC.