I’ve been hesitant to abstract some array operations with the fear that an unnecessary copy would be made when passing array expressions as argument. A sample case for the operation: subroutine mid_point(n, x, x_mid) integer, intent(in) :: n real, intent(in) :: x(n) real, intent(out) ::…

I’ve tried some experiments, and the result from gfortran-15 -fdump-tree-optimized (on MacM1) seems like the following (according to the .optimized file, though not very sure about the details of this file…): If mid_point() is defined in a separate module from the call statement, then a temporary …

Passing array expressions as argument

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lsmenicucci June 30, 2025, 7:43pm 18

This is very enlightening, thank you for taking your time. I wish Fortran had a standardized inline keyword to enable a more streamlined approach to situations like that.

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Passing array expressions as argument

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