回答編集履歴
1
精度向上
answer
CHANGED
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@@ -8,6 +8,8 @@
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8
8
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int32_t* k = (int32_t *)(&x);
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9
9
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*k = 0x5f3759df - (*k>>1);
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10
10
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x = x*(1.5-xh*x*x);
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11
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+
x = x*(1.5-xh*x*x);
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12
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+
x = x*(1.5-xh*x*x);
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11
13
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return x*n;
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12
14
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}
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13
15
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