Original two-dimensional nonuniform Fourier code using the dynamically allocated Fortran 90 interface and bundled Netlib FFT implementation. Forty-nine checksum-guarded edits change legacy extent-one FFT dummy-array declarations to assumed size after checking that each is a procedure argument; no formulas or local arrays change and bounds checking remains enabled. Legacy workspace argument type punning uses the package-specific -fallow-argument-mismatch option. The example transforms 96 deterministic scattered points onto a 16-by-18 mode grid for both exponent signs, checking status, finite values and all coefficients against an independent direct sum with the documented 1/nj normalization. Types 2/3, the static Fortran 77 interface, every FFT routine and multidimensional performance are not verified.
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Build record verified 2026-10-29.
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Original two-dimensional nonuniform Fourier code using the dynamically allocated Fortran 90 interface and bundled Netlib FFT implementation. Forty-nine checksum-guarded edits change legacy extent-one FFT dummy-array declarations to assumed size after checking that each is a procedure argument; no formulas or local arrays change and bounds checking remains enabled. Legacy workspace argument type punning uses the package-specific -fallow-argument-mismatch option. The example transforms 96 deterministic scattered points onto a 16-by-18 mode grid for both exponent signs, checking status, finite values and all coefficients against an independent direct sum with the documented 1/nj normalization. Types 2/3, the static Fortran 77 interface, every FFT routine and multidimensional performance are not verified.