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| author | das <das@FreeBSD.org> | 2010-12-03 07:01:07 +0000 |
|---|---|---|
| committer | das <das@FreeBSD.org> | 2010-12-03 07:01:07 +0000 |
| commit | de08b1bcf1ecdb8025e89558c87c0f0e800037cc (patch) | |
| tree | 465c821f12af58bcbf03e8c583987c665ca3f42e /share/man/man3 | |
| parent | d804a05c38218c9ba8d456766e46875f5ce04c6a (diff) | |
| download | FreeBSD-src-de08b1bcf1ecdb8025e89558c87c0f0e800037cc.zip FreeBSD-src-de08b1bcf1ecdb8025e89558c87c0f0e800037cc.tar.gz | |
Explain some of the reasons that fpsetprec() is unlikely to work as
one might expect. (These functions have already been deprecated for
many years.)
PR: 133583
Diffstat (limited to 'share/man/man3')
| -rw-r--r-- | share/man/man3/fpgetround.3 | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/share/man/man3/fpgetround.3 b/share/man/man3/fpgetround.3 index 1e93c84..189e252 100644 --- a/share/man/man3/fpgetround.3 +++ b/share/man/man3/fpgetround.3 @@ -32,7 +32,7 @@ .\" @(#)fpgetround.3 1.0 (Berkeley) 9/23/93 .\" $FreeBSD$ .\" -.Dd August 23, 1993 +.Dd December 3, 2010 .Dt FPGETROUND 3 .Os .Sh NAME @@ -164,6 +164,10 @@ and .Fn fpsetprec functions provide functionality unavailable on many platforms. At present, they are implemented only on the i386 and amd64 platforms. +Changing precision isn't a supported feature: +it may be ineffective when code is compiled to take advantage of SSE, +and many library functions and compiler optimizations depend upon the +default precision for correct behavior. .Sh SEE ALSO .Xr fenv 3 , .Xr isnan 3 |
