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-rw-r--r--doc/eval.texi4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/eval.texi b/doc/eval.texi
index d8c693f304..4a9495cf30 100644
--- a/doc/eval.texi
+++ b/doc/eval.texi
@@ -72,6 +72,10 @@ integer. For example, "floor(-1.5)" is "-2.0".
@item trunc(expr)
Round the value of expression @var{expr} towards zero to the nearest
integer. For example, "trunc(-1.5)" is "-1.0".
+
+@item sqrt(expr)
+Compute the square root of @var{expr}. This is equivalent to
+"(@var{expr})^.5".
@end table
Note that: