this is incorrect. float(pi)/4 exactly equals float(atan(1)). multiplication by ... | Hacker News

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adgjlsfhk1 3 months ago | parent | context | favorite | on: Pi calculation world record with over 202T digits

this is incorrect. float(pi)/4 exactly equals float(atan(1)). multiplication by 4 doesn't touch the mantisa. it just increments the exponent by 2

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