commit 814fb31d64aaddd6e00a51dfc55508c3d30cb8f6
author Niels <niels.lohmann@gmail.com> Fri Jul 01 16:51:35 2016 +0200
committer GitHub <noreply@github.com> Fri Jul 01 16:51:35 2016 +0200
tree 88fddad53076b884a772b9afc1e203d962c1a808
parent 7ffa07e3a3b21a2fec08da9c7d4fda8b7d043ff9
parent 5c129c898158c93f751985c305296d781891d814

Merge pull request #275 from dtoma/develop

Update hexify to use array lookup instead of ternary (#270)

src/json.hpp.re2c

diff --git a/src/json.hpp.re2c b/src/json.hpp.re2c
index 016ff0c..adc2e18 100644
--- a/src/json.hpp.re2c
+++ b/src/json.hpp.re2c
@@ -5959,9 +5959,11 @@
                         // (0..f)
                         const auto hexify = [](const int v) -> char
                         {
-                            return (v < 10)
-                            ? ('0' + static_cast<char>(v))
-                            : ('a' + static_cast<char>((v - 10) & 0x1f));
+						    static const char hex[16] = { '0', '1', '2', '3',
+                                                          '4', '5', '6', '7',
+                                                          '8', '9', 'a', 'b',
+                                                          'c', 'd', 'e', 'f' };
+						    return hex[v];
                         };
 
                         // print character c as \uxxxx