Evaluate the common logarithm.
The common logarithm (logarithm with base 10) is defined for any positive real number as
var log10 = require( '@stdlib/math/base/special/log10' );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 NaNFor negative numbers, the common logarithm is not defined.
var v = log10( -4.0 );
// returns NaNvar discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
var logEachMap = require( '@stdlib/console/log-each-map' );
var log10 = require( '@stdlib/math/base/special/log10' );
var opts = {
'dtype': 'float64'
};
var x = discreteUniform( 100, 0, 100, opts );
logEachMap( 'log10(%d) = %0.4f', x, log10 );#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 ~0.903The function accepts the following arguments:
- x:
[in] doubleinput value.
double stdlib_base_log10( const double x );#include "stdlib/math/base/special/log10.h"
#include <stdlib.h>
#include <stdio.h>
int main( void ) {
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/math/base/special/exp10: base 10 exponential function.@stdlib/math/base/special/ln: evaluate the natural logarithm of a double-precision floating-point number.@stdlib/math/base/special/log: compute the baseblogarithm of a double-precision floating-point number.