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)