NAME
asin,
asinf
- arc sine function
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
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),
math(3),
sin(3),
sinh(3),
tan(3),
tanh(3)
STANDARDS
The
asin()
function conforms to
ANSI X3.159-1989 (``ANSI C89'') .