#include <math.h>float log1pf(float num);double log1p(double num); long double log1pl(long double num); 

log1p( ), log1pf( ), and log1pl( ) were added by C99.

The log1p( ) family of functions returns the natural logarithm for num + 1. A domain error occurs if num is negative. If num is –1, a range error is possible.

A related function is log( ).

C(s)C++ Programmer's Reference
C Programming on the IBM PC (C Programmers Reference Guide Series)
ISBN: 0673462897
EAN: 2147483647
Year: 2002
Pages: 539

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