tan(3) - NetBSD Manual Pages

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TAN(3)                  NetBSD Library Functions Manual                 TAN(3)


NAME

     tan, tanf, tanl -- tangent functions


LIBRARY

     Math Library (libm, -lm)


SYNOPSIS

     #include <math.h>

     double
     tan(double x);

     float
     tanf(float x);

     long double
     tanl(long double x);


DESCRIPTION

     The tan() tanf() and tanl() functions compute the tangent of x (measured
     in radians).  A large magnitude argument may yield a result with little
     or no significance.  For a discussion of error due to roundoff, see
     math(3).


RETURN VALUES

     The tan() function returns the tangent value.


SEE ALSO

     acos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), math(3), sin(3),
     sinh(3), tanh(3)


STANDARDS

     The tan() function conforms to ANSI X3.159-1989 (``ANSI C89'').

NetBSD 10.99                      May 2, 1991                     NetBSD 10.99