The branch stable/13 has been updated by dim: URL: https://cgit.FreeBSD.org/src/commit/?id=9a0d922f57f2aacee8aee7a190f4dcc1cd5d8bf9
commit 9a0d922f57f2aacee8aee7a190f4dcc1cd5d8bf9 Author: Steve Kargl <[email protected]> AuthorDate: 2022-08-04 17:31:57 +0000 Commit: Dimitry Andric <[email protected]> CommitDate: 2022-08-07 09:02:36 +0000 [libm] Correct comments in s_cbrt[l].c Damian McGuckin <damianm at esi dot com dot au> noted that the accuracy claims in the code for cbrt(3) and cbrtl(3) were incorrect. Fix the comments to more accurately describe the accuracies. PR: 265603 MFC after: 3 days (cherry picked from commit 369ea0520a3061c07400d7cd32172efb6af39815) --- lib/msun/src/s_cbrt.c | 2 +- lib/msun/src/s_cbrtl.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/msun/src/s_cbrt.c b/lib/msun/src/s_cbrt.c index 0e609e110d9a..4353d340a1ac 100644 --- a/lib/msun/src/s_cbrt.c +++ b/lib/msun/src/s_cbrt.c @@ -108,7 +108,7 @@ cbrt(double x) r=x/s; /* error <= 0.5 ulps; |r| < |t| */ w=t+t; /* t+t is exact */ r=(r-t)/(w+r); /* r-t is exact; w+r ~= 3*t */ - t=t+t*r; /* error <= 0.5 + 0.5/3 + epsilon */ + t=t+t*r; /* error <= (0.5 + 0.5/3) * ulp */ return(t); } diff --git a/lib/msun/src/s_cbrtl.c b/lib/msun/src/s_cbrtl.c index 2236c0fa0348..b15c96ecde03 100644 --- a/lib/msun/src/s_cbrtl.c +++ b/lib/msun/src/s_cbrtl.c @@ -136,7 +136,7 @@ cbrtl(long double x) r=x/s; /* error <= 0.5 ulps; |r| < |t| */ w=t+t; /* t+t is exact */ r=(r-t)/(w+r); /* r-t is exact; w+r ~= 3*t */ - t=t+t*r; /* error <= 0.5 + 0.5/3 + epsilon */ + t=t+t*r; /* error <= (0.5 + 0.5/3) * ulp */ t *= v.e; RETURNI(t);
