[tarantool-patches] ***UNCHECKED*** Re: [PATCH 1/2] Move mp_compare_double_uint64() to trivia.h
Vladislav Shpilevoy
v.shpilevoy at tarantool.org
Fri Aug 9 00:37:10 MSK 2019
Hi! Thanks for the patch!
> diff --git a/src/trivia/util.h b/src/trivia/util.h
> index 1e01013db..ebfe0c392 100644
> --- a/src/trivia/util.h
> +++ b/src/trivia/util.h
> @@ -500,6 +500,20 @@ json_escape(char *buf, int size, const char *data);
> } \
> } while(0)
>
> +#define COMPARE_RESULT(a, b) (a < b ? -1 : a > b)
> +
> +/**
> + * Compare LHS with RHS, return a value <0, 0 or >0 depending on the
> + * comparison result (strcmp-style).
> + * Normally, K==1. If K==-1, the result is inverted (as if LHS and RHS
> + * were swapped).
> + * K is needed to enable tail call optimization in Release build.
> + * NOINLINE attribute was added to avoid aggressive inlining which
I guess, NOINLINE does not make sense anymore. But you can keep a
comment, that inlining should not be added in future for the sake
of tail call optimization.
> + * resulted in over 2Kb code size for mp_compare_number.
> + */
> +int
> +double_compare_uint64(double lhs, uint64_t rhs, int k);
> +
> #if !defined(__cplusplus) && !defined(static_assert)
> # define static_assert _Static_assert
> #endif
>
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