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/GNU Fortran 7

9.132 HUGE — Largest number of a kind

Description:

HUGE(X) returns the largest number that is not an infinity in the model of the type of X.

Standard:

Fortran 95 and later

Class:

Inquiry function

Syntax:

RESULT = HUGE(X)

Arguments:
X Shall be of type REAL or INTEGER.
Return value:

The return value is of the same type and kind as X

Example:
program test_huge_tiny
  print *, huge(0), huge(0.0), huge(0.0d0)
  print *, tiny(0.0), tiny(0.0d0)
end program test_huge_tiny

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https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gfortran/HUGE.html