commit 07df6940ed49672f4c71b10321fb3617ac9ccfa0
author Nick Wellnhofer <wellnhofer@aevum.de> Sun Oct 19 18:03:50 2014 +0200
committer Nick Wellnhofer <wellnhofer@aevum.de> Sun Oct 19 18:25:25 2014 +0200
tree 28891bf24f3818f917102a6cb2daddd36e40765f
parent 3bbf12de05a45e1641f2c72ce43a0e6e1f1a6050

Optimize decoding of similarity values

Decoding of similarity values can be optimized in a similar way.

core/Lucy/Index/Similarity.c

diff --git a/core/Lucy/Index/Similarity.c b/core/Lucy/Index/Similarity.c
index 27794ed..c6a18d4 100644
--- a/core/Lucy/Index/Similarity.c
+++ b/core/Lucy/Index/Similarity.c
@@ -194,9 +194,7 @@
         result = 0;
     }
     else {
-        const uint32_t mantissa = byte & 7;
-        const uint32_t exponent = (byte >> 3) & 31;
-        result = ((exponent + (63 - 15)) << 24) | (mantissa << 21);
+        result = (input + EXP_OFFSET) << 21;
     }
 
     return *(float*)&result;