added cauchy link function #304
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izeigerman
approved these changes
Sep 11, 2020
| @@ -66,6 +64,118 @@ def log1p(expr): | |||
| utils.div(utils.mul(expr, ast.LogExpr(expr1p)), expr1pm1)) | |||
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| def atan(expr): | |||
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Yeah, I know! 😃
But it was the only one I could find with appropriate accuracy. Others either have error about 1e-4 - 1e-6 or look even more scary. I even cannot remember how many trials I've made. There were Chebyshev, CORDIC, Taylor, Remez (in Sollya package)...
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Wow, impressive. Amazing work as always 👍
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Refer to #228.