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How does the speed of the translated C code compare with the original FORTRAN?

April 26, 2017code compare FORTRAN original speed translated

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How does the speed of the translated C code compare with the original FORTRAN?

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With most code, there isn’t much difference. Some programs run faster in C (usually due to faster C compilers), and some run faster in FORTRAN. Integer arithmetic and native I/O is normally faster in C, whereas complex arithmetic is definitely faster in FORTRAN. Double precision arithmetic is about the same in both languages.