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LibM: Implement copysign for float and long double
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87b61b0eef
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2 changed files with 26 additions and 8 deletions
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@ -289,6 +289,17 @@ static FloatT internal_scalbn(FloatT x, int exponent) NOEXCEPT
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return extractor.d;
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}
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template<typename FloatT>
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static FloatT internal_copysign(FloatT x, FloatT y) NOEXCEPT
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{
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using Extractor = FloatExtractor<FloatT>;
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Extractor ex, ey;
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ex.d = x;
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ey.d = y;
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ex.sign = ey.sign;
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return ex.d;
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}
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extern "C" {
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double trunc(double x) NOEXCEPT
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@ -845,14 +856,19 @@ long double nexttowardl(long double, long double) NOEXCEPT
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TODO();
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}
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double copysign(double x, double y)
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float copysignf(float x, float y) NOEXCEPT
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{
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using Extractor = FloatExtractor<decltype(x)>;
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Extractor ex, ey;
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ex.d = x;
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ey.d = y;
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ex.sign = ey.sign;
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return ex.d;
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return internal_copysign(x, y);
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}
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double copysign(double x, double y) NOEXCEPT
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{
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return internal_copysign(x, y);
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}
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long double copysignl(long double x, long double y) NOEXCEPT
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{
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return internal_copysign(x, y);
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}
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float scalbnf(float x, int exponent) NOEXCEPT
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