RAD Studio |  |

tan, tanl

Header File

math.h

Category

Math Routines

Prototype

double tan(double x);

long double tanl(long double x);

Description

Calculates the tangent.

tan calculates the tangent. Angles are specified in radians.

tanl is the long double version; it takes a long double argument and returns a long double result. Error handling for these routines can be modified through the functions _matherr and _matherrl..

Return Value

tan and tanl return the tangent of x, sin(x)/cos(x).

Example

Copy Code

    #include <stdio.h>
    #include <math.h>
    int main(void)
    {
       double result, x;
       x = 0.5;
       result = tan(x);
       printf("The tan of %lf is %lf\n", x, result);
       return 0;
    }

Portability

| POSIX | Win32 | ANSI C | ANSI C++
tan | + | + | + | +
tanl |  | + | + | +

Copyright(C) 2009 Embarcadero Technologies, Inc. All Rights Reserved.
What do you think about this topic? Send feedback!