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libtom / libtommath

LibTomMath is a free open source portable number theoretic multiple-precision integer library written entirely in C.
https://www.libtom.net
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Addition of rudimentary error tracing #579

Open czurnieden opened 5 months ago

czurnieden commented 5 months ago

This adds a compile-time-optional macro that inserts a line to print out the filename, line-number, and function to stderr before all of the goto LTM_ERR; instances and all return err; if err != MP_OKAY.

czurnieden commented 5 months ago

Eases the work quite a bit if the error comes from deep inside a recursive function. Found it very useful while debugging the fast-radix-conversion at the upper limit of LTM and had to add higher Toom-Cook functions (4 - 7) to avoid waiting a week to get the result. (One MP_OVF had the reason that mp_add adds an extra limb unconditionally, so the maximum number is 2^((MP_MAX_DIGIT_COUNT - 2)*MP_DIGIT_BIT))

Ah, the first typo has already been found :-(