aboutsummaryrefslogtreecommitdiffstats
path: root/man3
diff options
context:
space:
mode:
Diffstat (limited to 'man3')
-rw-r--r--man3/fma.36
1 files changed, 6 insertions, 0 deletions
diff --git a/man3/fma.3 b/man3/fma.3
index 8c9b9f4643..8fb09d1fca 100644
--- a/man3/fma.3
+++ b/man3/fma.3
@@ -62,6 +62,10 @@ is an infinity with the opposite sign,
a domain error occurs,
and a NaN is returned.
+.\" POSIX.1-2008 allows some possible differences for the following two
+.\" domain error cases, but on Linux they are treated the same (AFAICS).
+.\" Nevertheless, we'll mirror POSIX.1 and describe the two cases
+.\" separately.
If one of
.I x
or
@@ -71,6 +75,8 @@ is an infinity, the other is 0, and
is not a NaN,
a domain error occurs, and
a NaN is returned.
+.\" POSIX.1 says that a NaN or an implementation-defined value shall
+.\" be returned for this case.
If one of
.I x