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NetBSD 6.1.5 - man page for asin (netbsd section 3)

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

NAME
     asin, asinf -- arc sine function

LIBRARY
     Math Library (libm, -lm)

SYNOPSIS
     #include <math.h>

     double
     asin(double x);

     float
     asinf(float x);

DESCRIPTION
     The asin() and asinf() 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) and asinf(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 ANSI X3.159-1989 (``ANSI C89'').

BSD					   May 2, 1991					      BSD
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