Log - Analog Devices VISUALDSP++ 3.5 Manual

log

natural logarithm
Synopsis
#include <math.h>
double log(double);
float logf(float);
Description
The function computes the natural (base e) logarithm of its input.
log
Error Conditions
The function returns a zero and sets
log
negative.
Example
#include <math.h>
double y;
y = log(1.0);
See Also
alog, exp, log10
VisualDSP++ 3.5 C/C++ Compiler and Library Manual
for ADSP-219x DSPs
/* y = 0.0 */
C/C++ Run-Time Library
to if the input value is
errno EDOM
3-89