Re: [libm] Implementations for rsqrt[fl].

Paul Zimmermann <[email protected]> Mon, 18 May 2026 10:40:02 +0200

Newsgroups	gmane.os.freebsd.devel.hackers
Message-ID	<p9u0zf1x3ycd.fsf@thym>

       Hi Steve,

the 129 incorrect roundings I get for rsqrtf are:

libm wrong by up to 5.01e-01 ulp(s) [1] for x=0x1.13e07p-129
libm wrong by up to 5.01e-01 ulp(s) [1] for x=0x1.13e07p-127
libm wrong by up to 5.01e-01 ulp(s) [1] for x=0x1.13e07p-125
...
libm wrong by up to 5.01e-01 ulp(s) [1] for x=0x1.13e07p+123
libm wrong by up to 5.01e-01 ulp(s) [1] for x=0x1.13e07p+125
libm wrong by up to 5.01e-01 ulp(s) [1] for x=0x1.13e07p+127

Paul