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Use fused multiply-add for cosine distance

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Andrew Kane
2023-07-18 16:10:17 -07:00
parent 8a05debda1
commit b710dc68a0
1 changed files with 4 additions and 4 deletions
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8
src/vector.c
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@@ -627,9 +627,9 @@ cosine_distance(PG_FUNCTION_ARGS)
Vector *b = PG_GETARG_VECTOR_P(1);
float *ax = a->x;
float *bx = b->x;
double distance = 0.0;
double norma = 0.0;
double normb = 0.0;
float distance = 0.0;
float norma = 0.0;
float normb = 0.0;
CheckDims(a, b);
@@ -642,7 +642,7 @@ cosine_distance(PG_FUNCTION_ARGS)
}
/* Use sqrt(a * b) over sqrt(a) * sqrt(b) */
PG_RETURN_FLOAT8(1 - (distance / sqrt(norma * normb)));
PG_RETURN_FLOAT8(1.0 - ((double) distance / sqrt((double) norma * (double) normb)));
}
/*