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Evaluate the common logarithm.
The common logarithm (logarithm with base 10) is defined for any positive real number as
npm install @stdlib/mathbasespeciallog10
var log10 = require( '@stdlib/mathbasespeciallog10' );
Evaluates the common logarithm.
var v = log10( 100.0 );
// returns 2.0
v = log10( 8.0 );
// returns ~0.903
v = log10( 0.0 );
// returns Infinity
v = log10( Infinity );
// returns Infinity
v = log10( NaN );
// returns NaN
For negative numbers, the common logarithm is not defined.
var v = log10( 4.0 );
// returns NaN
var randu = require( '@stdlib/randombaserandu' );
var round = require( '@stdlib/mathbasespecialround' );
var log10 = require( '@stdlib/mathbasespeciallog10' );
var x;
var i;
for ( i = 0; i < 100; i++ ) {
x = round( randu() * 100.0 );
console.log( 'log10(%d) = %d', x, log10( x ) );
}
#include "stdlib/math/base/special/log10.h"
Evaluates the common logarithm.
double out = stdlib_base_log10( 100.0 );
// returns 2.0
out = stdlib_base_log10( 8.0 );
// returns ~0.903
The function accepts the following arguments:

x:
[in] double
input value.
double stdlib_base_log10( const double x );
#include "stdlib/math/base/special/log10.h"
#include <stdlib.h>
#include <stdio.h>
int main() {
double x;
double v;
int i;
for ( i = 0; i < 100; i++ ) {
x = ( (double)rand() / (double)RAND_MAX ) * 100.0;
v = stdlib_base_log10( x );
printf( "log10(%lf) = %lf\n", x, v );
}
}

@stdlib/mathbase/special/exp10
: base 10 exponential function. 
@stdlib/mathbase/special/ln
: evaluate the natural logarithm of a doubleprecision floatingpoint number. 
@stdlib/mathbase/special/log
: baseb
logarithm.
This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
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