NAME
asin,
asinf,
asinl —
arc sine function
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
double
asin(
double
x);
float
asinf(
float
x);
long double
asinl(
long double
x);
DESCRIPTION
The
asin(),
asinf(), and
asinl() functions compute the principal value of the arc
sine of
x in the range [-pi/2, +pi/2].
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),
math(3),
sin(3),
sinh(3),
tan(3),
tanh(3)
STANDARDS
The
asin() function conforms to
ISO/IEC
9899:1999 (“ISO C99”).