ASIN(3) BSD Programmer's Manual ASIN(3)
asin, asinf - arc sine function
#include <math.h> double asin(double x); float asinf(float x);
The asin() and asinf() functions compute the principal value of the arc sine of x in the range [-pi/2, +pi/2].
If |x|>1, asin(x) and asinf(x) return NaN and set the global variable errno to EDOM.
acos(3), atan(3), atan2(3), cos(3), cosh(3), math(3), sin(3), sinh(3), tan(3), tanh(3)
The asin() function conforms to ANSI X3.159-1989 ("ANSI C"). MirOS BSD #10-current May 2, 1991 1
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