fmax.3: Add caveat for going beyond C std requirements
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Authored by emaste on Thu, Apr 2, 10:04 PM.

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fuz

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rG7764e9ca28a9: fmax.3: Add caveat for going beyond C std requirements

Summary

libm's fmax and fmin family of functions treat +0.0 as greater than
-0.0.  This is not required by the C standard, so the user may not see
this behaviour due to compiler optimization.

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rG FreeBSD src repository

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emaste created this revision.Thu, Apr 2, 10:04 PM

Herald added a subscriber: ziaee. · View Herald TranscriptThu, Apr 2, 10:04 PM

emaste requested review of this revision.Thu, Apr 2, 10:04 PM

Once we get fmaximum_num and fminimum_num in, we should recommend that those be used instead. CC @jesuscblazquez_gmail.com.

This revision is now accepted and ready to land.Thu, Apr 2, 10:11 PM

jesuscblazquez_gmail.com mentioned this in D56236: lib/msun: Added fmaximum_mag and fmaximum_num families. Tests and man.Fri, Apr 3, 2:59 PM

fuz added a child revision: D56236: lib/msun: Added fmaximum_mag and fmaximum_num families. Tests and man.Fri, Apr 3, 11:54 PM

Closed by commit rG7764e9ca28a9: fmax.3: Add caveat for going beyond C std requirements (authored by emaste). · Explain WhyMon, Apr 6, 5:00 PM

This revision was automatically updated to reflect the committed changes.

emaste added a commit: rG7764e9ca28a9: fmax.3: Add caveat for going beyond C std requirements.

Herald added a subscriber: imp. · View Herald TranscriptMon, Apr 6, 5:00 PM

fuz mentioned this in rG4e30c12973c7: lib/msun: Added fmaximum_mag and fmaximum_num families.Sat, Apr 11, 6:10 PM

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lib/

msun/

man/

fmax.3

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fmax.3: Add caveat for going beyond C std requirementsClosedPublicActions