double
     tan(double x);

     long double
     tanl(long double x);

     float
     tanf(float x);

DESCRIPTION

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

SPECIAL VALUES

     tan(+-0) returns +-0.

     tan(+-infinity) returns a NaN and raises the "invalid" floating-point
     exception.

SEE ALSO

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

STANDARDS

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

BSD                            November 20, 2002                           BSD