Update runtime files
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 5936437..b5460ff 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -1,4 +1,4 @@
-*eval.txt* For Vim version 8.1. Last change: 2019 Nov 24
+*eval.txt* For Vim version 8.1. Last change: 2019 Nov 25
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -7642,16 +7642,17 @@
rand([{expr}]) *rand()*
Return a pseudo-random Number generated with an xorshift
- algorithm using seed {expr}. {expr} can be initialized by
- |srand()| and will be updated by rand().
- If {expr} is omitted, an internal seed value is used and
- updated.
+ algorithm using seed {expr}. The returned number is 32 bits,
+ also on 64 bits systems, for consistency.
+ {expr} can be initialized by |srand()| and will be updated by
+ rand(). If {expr} is omitted, an internal seed value is used
+ and updated.
Examples: >
:echo rand()
:let seed = srand()
:echo rand(seed)
- :echo rand(seed)
+ :echo rand(seed) % 16 " random number 0 - 15
<
*readdir()*
readdir({directory} [, {expr}])
@@ -9149,7 +9150,8 @@
srand([{expr}]) *srand()*
Initialize seed used by |rand()|:
- If {expr} is not given, seed values are initialized by
- time(NULL) a.k.a. epoch time.
+ time(NULL) a.k.a. epoch time. This only has second
+ accuracy.
- If {expr} is given, return seed values which x element is
{expr}. This is useful for testing or when a predictable
sequence is expected.