Library: | glm |
See also: | log xlnxdy |
Quantlet: | xlny | |
Description: | computes x.*log(y), with check for x=y=0, used for GLM. |
Usage: | l = xlny(x,y) | |
Input: | ||
x | n x k matrix | |
y | n x k matrix | |
Output: | ||
l | n x k matrix |
library("glm") x = 0|0|1|1|1 y = 0|0.5|1|0|0.5 xlny(x,y)
Contents of l [1,] 0 [2,] 0 [3,] 0 [4,] -Inf [5,] -0.69315