Texas Instruments TMS320C2x, User Manual

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tanh
7-58
Hyperbolic Tangent
tanh
Syntax #include <math.h>
double tanh (double x);
Defined in tanh.c in rts.src
Description The tanh function returns the hyperbolic tangent of a floating-point number x.
Example
double x, y;
x = 0.0;
y = tanh(x); /* return value = 0.0 */
Time
time
Syntax #include <time.h>
time_t time (time_t *timer);
Defined in time.c in rts.src
Description The time function determines the current calendar time, represented in sec-
onds since 12:00 A.M., Jan 1, 1900. If the calendar time is not available, the
function returns
− 1. If timer is not a null pointer, the function also assigns the
return value to the object that timer points to.
For more information about the functions and types that the time.h header
declares and defines, see section 7.2.12,
Time Functions (time.h) , on page
7-11.
Note: Writing Your Own Time Function
The time function is target-system specific, so you must write your own time
function.