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Herbie detects inaccurate expressions and finds more accurate replacements. The red expression is inaccurate when x > 1; Herbie's replacement, in blue, is accurate for all x. Herbie improving accuracy on the âHammingâ benchmark suite. Longer arrows are better. Each arrow starts at the accuracy of the original expression, and ends at the accuracy of Herbieâs output, in each case on random double-pr
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// #include <float.h> // FLT_EPSILON, DBL_EPSILON, LDBL_EPSILON // #include <math.h> // fabsf, fabs, fabsl, fmaxf, fmax, fmaxl /* floatåï¼å精度浮åå°æ°ç¹æ°ï¼ */ if (fabsf(a - b) <= FLT_EPSILON * fmaxf(1.f, fmaxf(fabsf(a), fabsf(b)))) {} /* doubleåï¼å精度浮åå°æ°ç¹æ°ï¼ */ if (fabs(a - b) <= DBL_EPSILON * fmax(1, fmax(fabs(a), fabs(b)))) {} /* long doubleåï¼åå精度浮åå°æ°ç¹æ°ï¼ */ if (fabsl(a - b) <= LDBL_EPSILON * fmaxl(1.L, fm
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