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asinl(3) [freebsd man page]

ASIN(3) 						   BSD Library Functions Manual 						   ASIN(3)

asin, asinf, asinl -- arc sine functions LIBRARY
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''). BSD
July 31, 2008 BSD
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