ASIN(3) | FreeBSD Library Functions Manual | ASIN(3) |
NAME
asin, asinf, asinl — arc sine functionsLIBRARY
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.RETURN VALUES
These functions return the arc sine in the range [-pi/2, +pi/2] radians. If:
|x| > 1
asin( x) raises an invalid exception and returns an NaN.
SEE ALSO
acos(3), atan(3), atan2(3), cos(3), cosh(3), fenv(3), math(3), sin(3), sinh(3), tan(3), tanh(3)STANDARDS
The asin(), asinf(), and asinl() functions conform to ISO/IEC 9899:1999 (“ISO C99”).July 31, 2008 | FreeBSD |