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allow tomsfastmath to be built without stdlib #34

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allow tomsfastmath to be built without stdlib #34

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Commits on Jan 6, 2024

  1. Use variable-length array instead of malloc/free. 

    The only use of `malloc`/`free` in tomfastmath is in
src/numtheory/fp_prime_random_ex.c, and the size required can be
calculated from the function arguments, so we can just use
a variable-length automatic array instead.

Variable-length automatic arrays are a C99 feature, and TFM already doesn’t
compile as C90, so we might as well take advantage of it.
    @ryancdotorg
    ryancdotorg committed Jan 6, 2024
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  2. remove snprintf/strncat/strlen from fp_ident 

    fp_ident is the only place tomsfast math uses string manipulation
functions when built as a library. This commit replaces them with
safe, trivial functions for concatonating static strings and numbers
together.
    @ryancdotorg
    ryancdotorg committed Jan 6, 2024
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  3. allow tomsfastmath to be built without stdlib 

    This commit enables tomsfastmath to be built with
`--no-standard-libraries` provided `TFM_NO_STDLIB` is defined, which
happens automatically if a web assembly build target is detected.

The only functionality this disables is the `fp_rand` function.
    @ryancdotorg
    ryancdotorg committed Jan 6, 2024
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