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Manual Reference Pages  - log (3)

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NAME

LOG(3f) - [FORTRAN:INTRINSIC:MATHEMATICS] Logarithm function

CONTENTS

Syntax
Description
Arguments
Return Value
Example
Standard
Class

SYNTAX

result = LOG(X)

DESCRIPTION

LOG(X) computes the natural logarithm of X, i.e. the logarithm to the base "e".

ARGUMENTS

X	- The type shall be REAL or COMPLEX.

RETURN VALUE

The return value is of type REAL or COMPLEX. The kind type parameter is the same as X. If X is COMPLEX, the imaginary part OMEGA is in the range

-PI < OMEGA <= PI.

EXAMPLE

Sample program:

   program demo_log
     real :: x = 2.7182818284590451_8
     complex :: z = (1.0, 2.0)
     x = log(x)    ! will yield (approximately) 1
     z = log(z)
   end program demo_log

STANDARD

[[FORTRAN 77]] and later

CLASS

[[Elemental procedure|Elemental function]]

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log (3)

March 18, 2019

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