GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
RedHat 5.2(Apollo) |
|
 |
log1p(3) |
 |
expm1, log1p − exponential minus 1, logarithm of 1 plus argument
#include <math.h>
double expm1 ( double x );
double log1p ( double x );
expm1(x) returns a value equivalent to ’exp (x) - 1’. It is computed in a way that is accurate even if the value of x is near zero--a case where ’exp (x) - 1’ would be inaccurate due to subtraction of two numbers that are nearly equal.
log1p(x) returns a value equivalent to ’log (1 + x)’. It is computed in a way that is accurate even if the value of x is near zero.
BSD
exp(3), log(3)
|
log1p(3) | |