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Manual Reference Pages  - log (3)

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

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
   implicit none
     real(kind(0.0d0)) :: x = 2.71828182845904518d0
     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]]

log (3) March 11, 2021
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