diff options
| author | Arne H Juul <arnej@yahooinc.com> | 2021-09-23 05:12:31 +0000 |
|---|---|---|
| committer | Arne H Juul <arnej@yahooinc.com> | 2021-09-23 10:43:15 +0000 |
| commit | 90133d8a4366bcd1b98eeb77889a9e3aa8244ed9 (patch) | |
| tree | 36aa6d4c6947616bfcc87ab4a8a298a146647422 /searchlib/src/main | |
| parent | eab6470364b66d261ce8f9669cd22ffe4ff0bf80 (diff) | |
add "hamming" function
Diffstat (limited to 'searchlib/src/main')
3 files changed, 6 insertions, 2 deletions
diff --git a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/TensorValue.java b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/TensorValue.java index e41732f9d16..33ba3c6ef4b 100644 --- a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/TensorValue.java +++ b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/TensorValue.java @@ -157,6 +157,7 @@ public class TensorValue extends Value { case fmod: return value.fmod(argument); case ldexp: return value.ldexp(argument); case bit: return value.bit(argument); + case hamming: return value.hamming(argument); default: throw new UnsupportedOperationException("Cannot combine two tensors using " + function); } } diff --git a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/Function.java b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/Function.java index 16aa947986d..3958711f74b 100644 --- a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/Function.java +++ b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/Function.java @@ -46,7 +46,8 @@ public enum Function implements Serializable { max(2) { public double evaluate(double x, double y) { return max(x,y); } }, min(2) { public double evaluate(double x, double y) { return min(x,y); } }, pow(2) { public double evaluate(double x, double y) { return pow(x,y); } }, - bit(2) { public double evaluate(double x, double y) { return ((int)y < 8 && (int)y >= 0 && ((int)x & (1 << (int)y)) != 0) ? 1.0 : 0.0; } }; + bit(2) { public double evaluate(double x, double y) { return ((int)y < 8 && (int)y >= 0 && ((int)x & (1 << (int)y)) != 0) ? 1.0 : 0.0; } }, + hamming(2) { public double evaluate(double x, double y) { return ScalarFunctions.Hamming.hamming(x, y); } }; private final int arity; diff --git a/searchlib/src/main/javacc/RankingExpressionParser.jj b/searchlib/src/main/javacc/RankingExpressionParser.jj index 99eff010628..7bfbfd6c005 100755 --- a/searchlib/src/main/javacc/RankingExpressionParser.jj +++ b/searchlib/src/main/javacc/RankingExpressionParser.jj @@ -124,6 +124,7 @@ TOKEN : // MIN <POW: "pow"> | <BIT: "bit"> | + <HAMMING: "hamming"> | <MAP: "map"> | <REDUCE: "reduce"> | @@ -735,7 +736,8 @@ Function binaryFunctionName() : { } <MAX> { return Function.max; } | <MIN> { return Function.min; } | <POW> { return Function.pow; } | - <BIT> { return Function.bit; } + <BIT> { return Function.bit; } | + <HAMMING> { return Function.hamming; } } List<ExpressionNode> expressionList() : |