TAN(3) Library Functions Manual TAN(3)
NAME
tan, tanftangent function
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
double
tan(double x);
float
tanf(float x);
DESCRIPTION
The tan() and tanf() 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
STANDARDS
The tan() function conforms to ANSI X3.159-1989 (“ANSI C”).