From fdf09e81de5e7f1ecfe71f98b56c411073badae8 Mon Sep 17 00:00:00 2001
From: Olivier Girondel <olivier@biniou.info>
Date: Sun, 4 Jan 2015 04:40:55 +0100
Subject: Add math:log2/1

---
 lib/asn1/src/asn1ct_imm.erl | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

(limited to 'lib/asn1/src/asn1ct_imm.erl')

diff --git a/lib/asn1/src/asn1ct_imm.erl b/lib/asn1/src/asn1ct_imm.erl
index bdd14871d1..1e112d6ad3 100644
--- a/lib/asn1/src/asn1ct_imm.erl
+++ b/lib/asn1/src/asn1ct_imm.erl
@@ -1580,7 +1580,7 @@ do_combine_put_bits(_, _, _) ->
     throw(impossible).
 
 debit(Budget0, Alternatives) ->
-    case Budget0 - log2(Alternatives) of
+    case Budget0 - math:log2(Alternatives) of
 	Budget when Budget > 0.0 ->
 	    Budget;
 	_ ->
@@ -1593,8 +1593,6 @@ num_clauses([_|T], N) ->
     num_clauses(T, N+1);
 num_clauses([], N) -> N.
 
-log2(N) ->
-    math:log(N) / math:log(2.0).
 
 collect_put_bits(Imm) ->
     lists:splitwith(fun({put_bits,V,_,_}) when is_integer(V) -> true;
-- 
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