tan(3M)




NAME

     tan - tangent function


SYNOPSIS

     cc [ flag ... ] file ... -lm [ library ... ]
     #include <math.h>

     double tan(double x);


DESCRIPTION

     The tan() function computes the tangent of its  argument  x,
     measured in radians.


RETURN VALUES

     Upon successful completion, tan() returns the tangent of x.

     If x is NaN or _Inf, NaN is returned.


ERRORS

     No errors will occur.


ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|


SEE ALSO

     atan(3M), isnan(3M), attributes(5)


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