Zilog EZ80F916 - Manual (Page 393)

UM014423-0607 C Standard Library
ZiLOG Developer Studio II
eZ80Acclaim! ® User Manual
373
tan
The tangent of x (measured in radians). A large magnitude argument can yield a result
with little or no significance.
Synopsis
#include
double tan(double x);
Returns
The tangent value.
Example
double x=2.22;
double y;
y=tan(x);
tanh
Computes the hyperbolic tangent of x.
Synopsis
#include
double tanh(double x);
Returns
The hyperbolic tangent of x.
Example
double x=2.22;
double y;
y=tanh(x);
tolower
Converts an uppercase letter to the corresponding lowercase letter.
Synopsis
#include
int tolower(int c);