PDL was designed in Fortran
I don't think this is true? It started as an XS library (so a sort of C) for Perl (see PDL::Philosophy). But it does have bindings to various Fortran libraries: LAPACK (PDL::LinearAlgebra), Minuit 1 (PDL::Minuit), Slatec (PDL::Slatec), a non-linear optimisation library (PDL::Opt::NonLinear), and probably more.

In reply to Re^2: intersection of scalar with 1D array and 2D array Matlab=>Perl by etj
in thread intersection of scalar with 1D array and 2D array Matlab=>Perl by f77coder

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