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OpenDarwin 7.2.1 - man page for asin (opendarwin section 3)

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

NAME
     asin -- arc sine function

SYNOPSIS
     #include <math.h>

     double
     asin(double x);

DESCRIPTION
     The asin() function computes the principal value of the arc sine of x in the range
     [-pi/2, +pi/2].

SPECIAL VALUES
     asin(+-0) returns +-0.

     asin(x) returns a NAN and raises the "invalid" floating-point exception for |x| > 1.

SEE ALSO
     acos(3), atan(3), atan2(3), cos(3), cosh(3), sin(3), sinh(3), tan(3), tanh(3), math(3),
     matherr(3)

STANDARDS
     The asin() function conforms to ISO/IEC 9899:1999(E).

BSD					November 15, 2002				      BSD
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