189. PDT can have fixed parameters at compile time or be ALLOCATABLE.

topic: Parameterized derived types

Note

This tip is a draft1.

A PDT can have fixed parameters at compile time or be ALLOCATABLE.

type(matrix(n1=3,n2=6,wp=kind(1d0))) :: a type(matrix(:,:)), allocatable :: b allocate (matrix(3,6) :: b)

The type parameters are accessible, read-only, as

a%n1, a%n2, a%wp

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A PDT can have fixed parameters at compile time or be ALLOCATABLE.

type(matrix(n1=3,n2=6,wp=kind(1d0))) :: a
type(matrix(:,:)), allocatable :: b
allocate (matrix(3,6) :: b)

The type parameters are accessible, read-only, as

a%n1, a%n2, a%wp

— FortranTip (@fortrantip) April 13, 2022

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1

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