HP MLIB User's Guide Vol. 2 7th Ed.

Chapter 12 VMATH 827
The base-e logarithm of the elements of a vector vsLn, vdLn
Name vsLn, vdLn
The base-e logarithm of the elements of a vector
Purpose vsLn and vdLn calculate the base-e logarithm function of vector elements:
y[i] = log(a[i]), for 0 <= i <= n-1
Usage VMATH:
#include <vmath.h>
void vsLn (int n, const float a[ ], float y [ ] ) ;
void vdLn (int n, const double a [ ], double y [ ] ) ;
VMATH8:
#include <vmath8.h>
void vsLn (long long n, const float a[ ], float y [ ] ) ;
void vdLn (long long n, const double a [ ], double y [ ] ) ;
Input n Number of elements to be calculated.
a Array of length at least n, specifying the input vector.
Output y Array of length at least n, specifying the output vector.