Date: Fri, 3 Dec 2010 07:01:07 +0000 (UTC) From: David Schultz <das@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r216142 - head/share/man/man3 Message-ID: <201012030701.oB3717YD058149@svn.freebsd.org>
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Author: das Date: Fri Dec 3 07:01:07 2010 New Revision: 216142 URL: http://svn.freebsd.org/changeset/base/216142 Log: 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 Modified: head/share/man/man3/fpgetround.3 Modified: head/share/man/man3/fpgetround.3 ============================================================================== --- head/share/man/man3/fpgetround.3 Fri Dec 3 04:39:48 2010 (r216141) +++ head/share/man/man3/fpgetround.3 Fri Dec 3 07:01:07 2010 (r216142) @@ -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
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