asin(3) - NetBSD Manual Pages

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ASIN(3)                 NetBSD Library Functions Manual                ASIN(3)


NAME

     asin, asinf, asinl -- arc sine function


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 in the range [-pi/2, +pi/2].


RETURN VALUES

     If |x|>1, asin(x), asinf(x), and asinl(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 ISO/IEC 9899:1999 (``ISO C99'').

NetBSD 9.1                     January 29, 2013                     NetBSD 9.1