Date: Fri, 08 Jan 2021 10:06:53 +0100 From: Paul Zimmermann <Paul.Zimmermann@...ia.fr> To: Rich Felker <dalias@...c.org> Cc: musl@...ts.openwall.com Subject: Re: issue with exp10l Dear Rich, > OK, on further investigation it looks like your problem is that you're > not passing a NAN but a trap representation. The representation is > only a nan if the exponent value is 0x7fff. For exponent not 0x7fff or > 0, the high bit of the significand must be set; otherwise it's a trap > representation. thank you. I have now forced the high bit of the significand to be set, and it works better indeed. I have found errors up to 40 ulps for exp10l: exp10l 0xd.41cfe8659e3d7eep+8l 40.1 Best regards, Paul
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