NAME
asin, asinf,
asinl —
arc sine function
LIBRARY
library “libm”
SYNOPSIS
#include
<math.h>
double
asin(double
x);
float
asinf(float
x);
long double
asinl(long
double x);
DESCRIPTION
Theasin(),
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”).