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-rw-r--r--man3/libsimple_difftimespec.39
1 files changed, 9 insertions, 0 deletions
diff --git a/man3/libsimple_difftimespec.3 b/man3/libsimple_difftimespec.3
index 49d4faa..bf26446 100644
--- a/man3/libsimple_difftimespec.3
+++ b/man3/libsimple_difftimespec.3
@@ -32,6 +32,15 @@ is subtracted by
.IR subtrahend )
and stores the result in
.IR diff .
+.PP
+These functions assume that
+.I minuend->tv_nsec
+and
+.I subtrahend->tv_nsec
+are in thier valid range ([0, 1000000000) for
+.BR libsimple_sumtimespec ()
+and [0, 1000000) for
+.BR libsimple_sumtimeval ())
.SH RETURN VALUE
The
.BR libsimple_difftimespec ()