EN JA
TAN(3)
TAN(3) FreeBSD Library Functions Manual TAN(3)

NAME

tan, tanf, tanltangent 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(), tanf(), and tanl() functions return the tangent value.

STANDARDS

These functions conform to ISO/IEC 9899:1999 (“ISO C99”).
January 24, 2008 FreeBSD