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@@ -178,13 +178,17 @@ void CpuGenerator<double, mnd::X86_AVX_FMA, parallel>::generate(const mnd::Mande
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for (int k = 0; k < info.maxIter; k++) {
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__m256d ab = _mm256_mul_pd(a, b);
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+ __m256d bb = _mm256_mul_pd(b, b);
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__m256d ab2 = _mm256_mul_pd(a2, b2);
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- a = _mm256_fmsub_pd(a, a, _mm256_fmsub_pd(b, b, cx));
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- a2 = _mm256_fmsub_pd(a2, a2, _mm256_fmsub_pd(b2, b2, cx2));
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+ __m256d bb2 = _mm256_mul_pd(b2, b2);
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+ a = _mm256_fmsub_pd(a, a, bb);
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+ a = _mm256_add_pd(a, cx);
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+ a2 = _mm256_fmsub_pd(a2, a2, bb2);
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+ a2 = _mm256_add_pd(a2, cx2);
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b = _mm256_fmadd_pd(two, ab, cy);
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b2 = _mm256_fmadd_pd(two, ab2, cy);
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- __m256d cmp = _mm256_cmp_pd(_mm256_fmadd_pd(a, a, _mm256_mul_pd(b, b)), threshold, _CMP_LE_OQ);
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- __m256d cmp2 = _mm256_cmp_pd(_mm256_fmadd_pd(a2, a2, _mm256_mul_pd(b2, b2)), threshold, _CMP_LE_OQ);
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+ __m256d cmp = _mm256_cmp_pd(_mm256_fmadd_pd(a, a, bb), threshold, _CMP_LE_OQ);
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+ __m256d cmp2 = _mm256_cmp_pd(_mm256_fmadd_pd(a2, a2, bb2), threshold, _CMP_LE_OQ);
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if (info.smooth) {
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resultsa = _mm256_or_pd(_mm256_andnot_pd(cmp, resultsa), _mm256_and_pd(cmp, a));
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resultsb = _mm256_or_pd(_mm256_andnot_pd(cmp, resultsb), _mm256_and_pd(cmp, b));
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