8.154 LOG10 — Base 10 logarithm function

Description:

LOG10(X) computes the base 10 logarithm of X.

Standard:

Fortran 77 and later

Class:

Elemental function

Syntax:

RESULT = LOG10(X)

Arguments:

X	The type shall be REAL.

Return value:

The return value is of type REAL or COMPLEX. The kind type parameter is the same as X.

Example:

program test_log10
  real(8) :: x = 10.0_8
  x = log10(x)
end program test_log10

Specific names:

Name	Argument	Return type	Standard
ALOG10(X)	REAL(4) X	REAL(4)	Fortran 95 and later
DLOG10(X)	REAL(8) X	REAL(8)	Fortran 95 and later