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TAN(3)                     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 11.99                      May 2, 1991                     NetBSD 11.99