[libc-commits] [PATCH] D115408: [libc] Implement correctly rounded logf based on RLIBM library.

[Paul Zimmermann via Phabricator via libc-commits]

zimmermann6 added a comment.

maybe I did something wrong, but with the latest version I get two failures for x=0x1.2f1fd6p+3 and x=0x1.bacb4ap+25.
If I disable the test for exceptional values I get five failures, those two and x=0x1.01a33ep+0, x=0x1.b121a6p+76 and 0x1.6351d8p+95.

With the following minimax polynomial found using Sollya I get only four failures (the value x=0x1.01a33ep+0 is CR):
0.19620128080245119450708557451434899121522903442383 * x^5 + -0.24996749678377125358785804110084427520632743835449 * x^4 + 0.33333320666203714033315463893814012408256530761719 * x^3 + -0.49999999978385922805301788685028441250324249267578 * x^2 + 0.9999999999998795408018281705153640359640121459961 * x


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https://reviews.llvm.org/D115408