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-rw-r--r--share/man/man3/fpgetround.36
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
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