TAN(3) |
Library Functions Manual |
TAN(3) |
NAME
tan, tanf — tangent 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.
STANDARDS
The tan() function conforms to ANSI X3.159-1989 (“ANSI C89”).