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'') .