Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Group: Mathematical Functions
Topic: Exponential and Logarithmic Functions
See also: exp expm1 log log10

Function: log1p
Description: log1p computes the natural logarithm of (1+x) accurately even for tiny x.

Usage: z = log1p (x)
Input:
x array
Output:
z array

Note:

Example:

log1p (expm1((1:5)'))
Result:

Contents of log1p
[1,]  0.69315   1.3133   2.1269   3.0486   4.0181 

Group: Mathematical Functions
Topic: Exponential and Logarithmic Functions
See also: exp expm1 log log10

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

(C) MD*TECH Method and Data Technologies, 17.8.2000