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Performance fixes relating to floating point

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Removes unneccesary usage of soft-float double usage. The reason for the
useless double math being done were broken standard C++ functions:
atanh<float>, sqrt<float>, asinh<float>, operator/<float>. This was in
turn caused by missing float versions of C++ functions hypot, atan2,
logb, scalbn.

A logbf implementation was missing from the libm, so I added one from
openlibm.
This commit is contained in:
Neven Sajko
2020-02-24 02:07:05 +00:00
committed by LeaNumworks
parent c92b770112
commit bdc5be94b6
3 changed files with 46 additions and 1 deletions
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4
libaxx/include/cmath
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@@ -121,12 +121,14 @@ inline constexpr float floor(float x) { return __builtin_floorf(x); }
inline constexpr float fmax(float x, float y) { return __builtin_fmaxf(x, y); }
inline constexpr float fmod(float x, float y) { return __builtin_fmodf(x, y); }
inline constexpr float frexp(float x, int *exp) { return __builtin_frexpf(x, exp); }
inline constexpr float hypot(float x, float y) { return __builtin_hypotf(x, y); }
inline constexpr float ldexp(float x, int exp) { return __builtin_ldexpf(x, exp); }
inline constexpr float lgamma(float x) { return __builtin_lgammaf(x); }
inline constexpr float lgamma_r(float x, int *signgamp) { return __builtin_lgammaf_r(x, signgamp); }
inline constexpr float log(float x) { return __builtin_logf(x); }
inline constexpr float log1p(float x) { return __builtin_log1pf(x); }
inline constexpr float log10(float x) { return __builtin_log10f(x); }
inline constexpr float log(float x) { return __builtin_logf(x); }
inline constexpr float logb(float x) { return __builtin_logbf(x); }
inline constexpr float modf(float x, float *iptr) { return __builtin_modff(x, iptr); }
inline constexpr float nanf(const char *tagp) { return __builtin_nanf(tagp); }
inline constexpr float nearbyint(float x) { return __builtin_nearbyintf(x); }