ASIN(3) Linux Programmer's Manual ASIN(3)
NAME
asin - arc sine functionSYNOPSIS
#include <math.h> double asin(double x);DESCRIPTION
The asin() function calculates the arc sine of x; that is the value whose sine is x. If x falls outside the range -1 to 1, asin() fails and errno is set.RETURN VALUE
The asin() function returns the arc sine in radians and the value is mathematically defined to be between -PI/2 and PI/2 (inclusive).ERRORS
EDOM x is out of range.CONFORMING TO
SVID 3, POSIX, BSD 4.3, ISO 9899
acos, atan, atan2, cos, sin, tan,
June 8, 1993 1
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