Updated readme [skip ci]

.github/workflows/build.yml

@@ -20,6 +20,8 @@ jobs:
             os: ubuntu-20.04
           - postgres: 12
             os: ubuntu-20.04
+          - postgres: 11
+            os: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4
       - uses: ankane/setup-postgres@v1

Makefile

@@ -3,8 +3,8 @@ EXTVERSION = 0.5.1
 
 MODULE_big = vector
 DATA = $(wildcard sql/*--*.sql)
-OBJS = src/half.o src/hnsw.o src/hnswbuild.o src/hnswinsert.o src/hnswscan.o src/hnswutils.o src/hnswvacuum.o src/ivfbuild.o src/ivfflat.o src/ivfinsert.o src/ivfkmeans.o src/ivfscan.o src/ivfutils.o src/ivfvacuum.o src/vector.o
+OBJS = src/hnsw.o src/hnswbuild.o src/hnswinsert.o src/hnswscan.o src/hnswutils.o src/hnswvacuum.o src/ivfbuild.o src/ivfflat.o src/ivfinsert.o src/ivfkmeans.o src/ivfscan.o src/ivfutils.o src/ivfvacuum.o src/vector.o
-HEADERS = src/half.h src/vector.h
+HEADERS = src/vector.h
 
 TESTS = $(wildcard test/sql/*.sql)
 REGRESS = $(patsubst test/sql/%.sql,%,$(TESTS))

Makefile.win

@@ -1,8 +1,8 @@
 EXTENSION = vector
 EXTVERSION = 0.5.1
 
-OBJS = src\half.obj src\hnsw.obj src\hnswbuild.obj src\hnswinsert.obj src\hnswscan.obj src\hnswutils.obj src\hnswvacuum.obj src\ivfbuild.obj src\ivfflat.obj src\ivfinsert.obj src\ivfkmeans.obj src\ivfscan.obj src\ivfutils.obj src\ivfvacuum.obj src\vector.obj
+OBJS = src\hnsw.obj src\hnswbuild.obj src\hnswinsert.obj src\hnswscan.obj src\hnswutils.obj src\hnswvacuum.obj src\ivfbuild.obj src\ivfflat.obj src\ivfinsert.obj src\ivfkmeans.obj src\ivfscan.obj src\ivfutils.obj src\ivfvacuum.obj src\vector.obj
-HEADERS = src\half.h src\vector.h
+HEADERS = src\vector.h
 
 REGRESS = btree cast copy functions input ivfflat_cosine ivfflat_ip ivfflat_l2 ivfflat_options ivfflat_unlogged
 REGRESS_OPTS = --inputdir=test --load-extension=$(EXTENSION)

README.md

@@ -10,7 +10,7 @@ Store your vectors with the rest of your data. Supports:
 
 Plus [ACID](https://en.wikipedia.org/wiki/ACID) compliance, point-in-time recovery, JOINs, and all of the other [great features](https://www.postgresql.org/about/) of Postgres
 
-[![Build Status](https://github.com/pgvector/pgvector/actions/workflows/build.yml/badge.svg)](https://github.com/pgvector/pgvector/actions)
+[![Build Status](https://github.com/pgvector/pgvector/workflows/build/badge.svg?branch=master)](https://github.com/pgvector/pgvector/actions)
 
 ## Installation
 
@@ -269,8 +269,6 @@ Specify HNSW parameters
 CREATE INDEX ON items USING hnsw (embedding vector_l2_ops) WITH (m = 16, ef_construction = 64);
 ```
 
-A higher value of `ef_construction` provides better recall at the cost of index build time / insert speed.
-
 ### Query Options
 
 Specify the size of the dynamic candidate list for search (40 by default)
@@ -379,7 +377,7 @@ Language | Libraries / Examples
 --- | ---
 C | [pgvector-c](https://github.com/pgvector/pgvector-c)
 C++ | [pgvector-cpp](https://github.com/pgvector/pgvector-cpp)
-C#, F#, Visual Basic | [pgvector-dotnet](https://github.com/pgvector/pgvector-dotnet)
+C# | [pgvector-dotnet](https://github.com/pgvector/pgvector-dotnet)
 Crystal | [pgvector-crystal](https://github.com/pgvector/pgvector-crystal)
 Dart | [pgvector-dart](https://github.com/pgvector/pgvector-dart)
 Elixir | [pgvector-elixir](https://github.com/pgvector/pgvector-elixir)
@@ -388,10 +386,8 @@ Haskell | [pgvector-haskell](https://github.com/pgvector/pgvector-haskell)
 Java, Kotlin, Groovy, Scala | [pgvector-java](https://github.com/pgvector/pgvector-java)
 JavaScript, TypeScript | [pgvector-node](https://github.com/pgvector/pgvector-node)
 Julia | [pgvector-julia](https://github.com/pgvector/pgvector-julia)
-Lisp | [pgvector-lisp](https://github.com/pgvector/pgvector-lisp)
 Lua | [pgvector-lua](https://github.com/pgvector/pgvector-lua)
 Nim | [pgvector-nim](https://github.com/pgvector/pgvector-nim)
-OCaml | [pgvector-ocaml](https://github.com/pgvector/pgvector-ocaml)
 Perl | [pgvector-perl](https://github.com/pgvector/pgvector-perl)
 PHP | [pgvector-php](https://github.com/pgvector/pgvector-php)
 Python | [pgvector-python](https://github.com/pgvector/pgvector-python)
@@ -464,14 +460,6 @@ and query with:
 SELECT * FROM items ORDER BY embedding::vector(3) <-> '[3,1,2]' LIMIT 5;
 ```
 
-#### Do indexes need to fit into memory?
-
-No, but like other index types, you’ll likely see better performance if they do. You can get the size of an index with:
-
-```sql
-SELECT pg_size_pretty(pg_relation_size('index_name'));
-```
-
 ## Troubleshooting
 
 #### Why isn’t a query using an index?
@@ -690,6 +678,16 @@ SELECT extversion FROM pg_extension WHERE extname = 'vector';
 
 ## Upgrade Notes
 
+### 0.6.0
+
+If upgrading with Postgres < 13, remove this line from `sql/vector--0.5.1--0.6.0.sql`:
+
+```sql
+ALTER TYPE vector SET (STORAGE = external);
+```
+
+Then run `make install` and `ALTER EXTENSION vector UPDATE;`.
+
 ### 0.4.0
 
 If upgrading with Postgres < 13, remove this line from `sql/vector--0.3.2--0.4.0.sql`:

sql/vector--0.5.1--0.6.0.sql

@@ -1,101 +1,5 @@
 -- complain if script is sourced in psql, rather than via CREATE EXTENSION
 \echo Use "ALTER EXTENSION vector UPDATE TO '0.6.0'" to load this file. \quit
 
-CREATE TYPE half;
+-- remove this single line for Postgres < 13
-
+ALTER TYPE vector SET (STORAGE = external);
-CREATE FUNCTION half_in(cstring, oid, integer) RETURNS half
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_out(half) RETURNS cstring
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_recv(internal, oid, integer) RETURNS half
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_send(half) RETURNS bytea
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE TYPE half (
-	INPUT     = half_in,
-	OUTPUT    = half_out,
-	RECEIVE   = half_recv,
-	SEND      = half_send,
-	INTERNALLENGTH = 2,
-	PASSEDBYVALUE,
-	ALIGNMENT = int2
-);
-
-CREATE FUNCTION l2_distance(half[], half[]) RETURNS float8
-	AS 'MODULE_PATHNAME', 'half_l2_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION inner_product(half[], half[]) RETURNS float8
-	AS 'MODULE_PATHNAME', 'half_inner_product' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION cosine_distance(half[], half[]) RETURNS float8
-	AS 'MODULE_PATHNAME', 'half_cosine_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION l1_distance(half[], half[]) RETURNS float8
-	AS 'MODULE_PATHNAME', 'half_l1_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_l2_squared_distance(half[], half[]) RETURNS float8
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_negative_inner_product(half[], half[]) RETURNS float8
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION float4_to_half(real, integer, boolean) RETURNS half
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_to_float4(half, integer, boolean) RETURNS real
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION float8_to_half(float8, integer, boolean) RETURNS half
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_to_float8(half, integer, boolean) RETURNS float8
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION integer_to_half(integer, integer, boolean) RETURNS half
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION numeric_to_half(numeric, integer, boolean) RETURNS half
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_to_numeric(half, integer, boolean) RETURNS numeric
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE CAST (real AS half)
-	WITH FUNCTION float4_to_half(real, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (half AS real)
-	WITH FUNCTION half_to_float4(half, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (float8 AS half)
-	WITH FUNCTION float8_to_half(float8, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (half AS float8)
-	WITH FUNCTION half_to_float8(half, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (integer AS half)
-	WITH FUNCTION integer_to_half(integer, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (numeric AS half)
-	WITH FUNCTION numeric_to_half(numeric, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (half AS numeric)
-	WITH FUNCTION half_to_numeric(half, integer, boolean) AS IMPLICIT;
-
-CREATE OPERATOR <-> (
-	LEFTARG = half[], RIGHTARG = half[], PROCEDURE = l2_distance,
-	COMMUTATOR = '<->'
-);
-
-CREATE OPERATOR <#> (
-	LEFTARG = half[], RIGHTARG = half[], PROCEDURE = half_negative_inner_product,
-	COMMUTATOR = '<#>'
-);
-
-CREATE OPERATOR <=> (
-	LEFTARG = half[], RIGHTARG = half[], PROCEDURE = cosine_distance,
-	COMMUTATOR = '<=>'
-);

sql/vector.sql

@@ -26,7 +26,7 @@ CREATE TYPE vector (
 	TYPMOD_IN = vector_typmod_in,
 	RECEIVE   = vector_recv,
 	SEND      = vector_send,
-	STORAGE   = extended
+	STORAGE   = external
 );
 
 -- functions
@@ -290,114 +290,3 @@ CREATE OPERATOR CLASS vector_cosine_ops
 	OPERATOR 1 <=> (vector, vector) FOR ORDER BY float_ops,
 	FUNCTION 1 vector_negative_inner_product(vector, vector),
 	FUNCTION 2 vector_norm(vector);
-
--- half type
-
-CREATE TYPE half;
-
-CREATE FUNCTION half_in(cstring, oid, integer) RETURNS half
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_out(half) RETURNS cstring
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_recv(internal, oid, integer) RETURNS half
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_send(half) RETURNS bytea
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE TYPE half (
-	INPUT     = half_in,
-	OUTPUT    = half_out,
-	RECEIVE   = half_recv,
-	SEND      = half_send,
-	INTERNALLENGTH = 2,
-	PASSEDBYVALUE,
-	ALIGNMENT = int2
-);
-
--- half functions
-
-CREATE FUNCTION l2_distance(half[], half[]) RETURNS float8
-	AS 'MODULE_PATHNAME', 'half_l2_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION inner_product(half[], half[]) RETURNS float8
-	AS 'MODULE_PATHNAME', 'half_inner_product' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION cosine_distance(half[], half[]) RETURNS float8
-	AS 'MODULE_PATHNAME', 'half_cosine_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION l1_distance(half[], half[]) RETURNS float8
-	AS 'MODULE_PATHNAME', 'half_l1_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
--- half private functions
-
-CREATE FUNCTION half_l2_squared_distance(half[], half[]) RETURNS float8
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_negative_inner_product(half[], half[]) RETURNS float8
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
--- half cast functions
-
-CREATE FUNCTION float4_to_half(real, integer, boolean) RETURNS half
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_to_float4(half, integer, boolean) RETURNS real
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION float8_to_half(float8, integer, boolean) RETURNS half
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_to_float8(half, integer, boolean) RETURNS float8
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION integer_to_half(integer, integer, boolean) RETURNS half
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION numeric_to_half(numeric, integer, boolean) RETURNS half
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
-CREATE FUNCTION half_to_numeric(half, integer, boolean) RETURNS numeric
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
--- half casts
-
-CREATE CAST (real AS half)
-	WITH FUNCTION float4_to_half(real, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (half AS real)
-	WITH FUNCTION half_to_float4(half, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (float8 AS half)
-	WITH FUNCTION float8_to_half(float8, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (half AS float8)
-	WITH FUNCTION half_to_float8(half, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (integer AS half)
-	WITH FUNCTION integer_to_half(integer, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (numeric AS half)
-	WITH FUNCTION numeric_to_half(numeric, integer, boolean) AS IMPLICIT;
-
-CREATE CAST (half AS numeric)
-	WITH FUNCTION half_to_numeric(half, integer, boolean) AS IMPLICIT;
-
--- half operators
-
-CREATE OPERATOR <-> (
-	LEFTARG = half[], RIGHTARG = half[], PROCEDURE = l2_distance,
-	COMMUTATOR = '<->'
-);
-
-CREATE OPERATOR <#> (
-	LEFTARG = half[], RIGHTARG = half[], PROCEDURE = half_negative_inner_product,
-	COMMUTATOR = '<#>'
-);
-
-CREATE OPERATOR <=> (
-	LEFTARG = half[], RIGHTARG = half[], PROCEDURE = cosine_distance,
-	COMMUTATOR = '<=>'
-);

src/half.c

@@ -1,694 +0,0 @@
-#include "postgres.h"
-
-#include <math.h>
-
-#include "common/shortest_dec.h"
-#include "fmgr.h"
-#include "half.h"
-#include "lib/stringinfo.h"
-#include "libpq/pqformat.h"
-#include "utils/array.h"
-#include "utils/builtins.h"
-#include "utils/float.h"
-#include "utils/numeric.h"
-
-#if PG_VERSION_NUM < 120003
-static pg_noinline void
-float_overflow_error(void)
-{
-	ereport(ERROR,
-			(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
-			 errmsg("value out of range: overflow")));
-}
-
-static pg_noinline void
-float_underflow_error(void)
-{
-	ereport(ERROR,
-			(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
-			 errmsg("value out of range: underflow")));
-}
-#endif
-
-/*
- * Check if array is a vector
- */
-static void
-CheckArrayIsVector(ArrayType *array)
-{
-	if (ARR_NDIM(array) > 1)
-		ereport(ERROR,
-				(errcode(ERRCODE_DATA_EXCEPTION),
-				 errmsg("array must be 1-D")));
-
-	if (ARR_HASNULL(array) && array_contains_nulls(array))
-		ereport(ERROR,
-				(errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
-				 errmsg("array must not contain nulls")));
-}
-
-/*
- * Check if dimensions are the same
- */
-static int
-CheckDims(ArrayType *a, ArrayType *b)
-{
-	int			dima;
-	int			dimb;
-
-	CheckArrayIsVector(a);
-	CheckArrayIsVector(b);
-
-	dima = ARR_DIMS(a)[0];
-	dimb = ARR_DIMS(b)[0];
-
-	if (dima != dimb)
-		ereport(ERROR,
-				(errcode(ERRCODE_DATA_EXCEPTION),
-				 errmsg("different dimensions %d and %d", dima, dimb)));
-
-	return dima;
-}
-
-/*
- * Return the datum representation for a half
- */
-static inline Datum
-HalfGetDatum(half X)
-{
-	union
-	{
-		half		value;
-		int16		retval;
-	}			myunion;
-
-	myunion.value = X;
-	return Int16GetDatum(myunion.retval);
-}
-
-/*
- * Return the half value of a datum
- */
-static inline half
-DatumGetHalf(Datum X)
-{
-	union
-	{
-		int16		value;
-		half		retval;
-	}			myunion;
-
-	myunion.value = DatumGetInt16(X);
-	return myunion.retval;
-}
-
-/*
- * Get a half from a message buffer
- */
-static half
-pq_getmsghalf(StringInfo msg)
-{
-	union
-	{
-		half		h;
-		uint16		i;
-	}			swap;
-
-	swap.i = pq_getmsgint(msg, 2);
-	return swap.h;
-}
-
-/*
- * Append a half to a StringInfo buffer
- */
-static void
-pq_sendhalf(StringInfo buf, half h)
-{
-	union
-	{
-		half		h;
-		uint16		i;
-	}			swap;
-
-	swap.h = h;
-	pq_sendint16(buf, swap.i);
-}
-
-/*
- * Convert a half to a float4
- */
-static float
-HalfToFloat4(half num)
-{
-#ifdef FLT16_SUPPORT
-	return (float) num;
-#else
-	/* TODO Improve performance */
-	/* TODO Check endianness */
-	uint16		bin = *((uint16 *) &num);
-	uint32		exponent = (bin & 0x7C00) >> 10;
-	uint32		mantissa = bin & 0x03FF;
-
-	/* Sign */
-	uint32		result = (bin & 0x8000) << 16;
-
-	if (exponent == 31)
-	{
-		if (mantissa == 0)
-		{
-			/* Infinite */
-			result |= 0x7F800000;
-		}
-		else
-		{
-			/* NaN */
-			result |= 0x7FC00000;
-			result |= mantissa << 13;
-		}
-	}
-	else if (exponent == 0)
-	{
-		/* Subnormal */
-		if (mantissa != 0)
-		{
-			exponent = -14;
-
-			for (int i = 0; i < 10; i++)
-			{
-				mantissa <<= 1;
-				exponent -= 1;
-
-				if ((mantissa >> 10) % 2 == 1)
-				{
-					mantissa &= 0x03ff;
-					break;
-				}
-			}
-
-			result |= (exponent + 127) << 23;
-			result |= mantissa << 13;
-		}
-	}
-	else
-	{
-		/* Normal */
-		result |= (exponent - 15 + 127) << 23;
-		result |= mantissa << 13;
-	}
-
-	return *((float *) &result);
-#endif
-}
-
-/*
- * Convert a float4 to a half
- */
-static half
-Float4ToHalfUnchecked(float num)
-{
-#ifdef FLT16_SUPPORT
-	return (_Float16) num;
-#else
-	/* TODO Improve performance */
-	/* TODO Check endianness */
-	uint32		bin = *((uint32 *) &num);
-	int			exponent = (bin & 0x7F800000) >> 23;
-	int			mantissa = bin & 0x007FFFFF;
-
-	/* Sign */
-	uint16		result = (bin & 0x80000000) >> 16;
-
-	if (isinf(num))
-	{
-		/* Infinite */
-		result |= 0x7C00;
-	}
-	else if (isnan(num))
-	{
-		/* NaN */
-		result |= 0x7E00;
-		result |= mantissa >> 13;
-	}
-	else if (exponent > 98)
-	{
-		int			m;
-		int			gr;
-		int			s;
-
-		exponent -= 127;
-		s = mantissa & 0x00000FFF;
-
-		/* Subnormal */
-		if (exponent < -14)
-		{
-			int			diff = -exponent - 14;
-
-			mantissa >>= diff;
-			mantissa += 1 << (23 - diff);
-			s |= mantissa & 0x00000FFF;
-		}
-
-		m = mantissa >> 13;
-
-		/* Round */
-		gr = (mantissa >> 12) % 4;
-		if (gr == 3 || (gr == 1 && s != 0))
-			m += 1;
-
-		if (m == 1024)
-		{
-			m = 0;
-			exponent += 1;
-		}
-
-		if (exponent > 15)
-		{
-			/* Infinite */
-			result |= 0x7C00;
-		}
-		else
-		{
-			if (exponent >= -14)
-				result |= (exponent + 15) << 10;
-
-			result |= m;
-		}
-	}
-
-	return *((half *) & result);
-#endif
-}
-
-/*
- * Check if half is infinite
- */
-static inline bool
-HalfIsInf(half num)
-{
-#ifdef FLT16_SUPPORT
-	return isinf(num);
-#else
-	return (num << 1) == 0xF800;
-#endif
-}
-
-/*
- * Check if half is zero
- */
-static inline bool
-HalfIsZero(half num)
-{
-#ifdef FLT16_SUPPORT
-	return num == 0;
-#else
-	return (num << 1) == 0x0000;
-#endif
-}
-
-/*
- * Convert a float4 to a half
- */
-static half
-Float4ToHalf(float num)
-{
-	half		result = Float4ToHalfUnchecked(num);
-
-	if (unlikely(HalfIsInf(result)) && !isinf(num))
-		float_overflow_error();
-	if (unlikely(HalfIsZero(result)) && num != 0.0)
-		float_underflow_error();
-
-	return result;
-}
-
-/*
- * Convert a float8 to a half
- */
-static half
-Float8ToHalf(double num)
-{
-	/* TODO Convert directly for greater accuracy */
-	half		result = Float4ToHalfUnchecked((float) num);
-
-	if (unlikely(HalfIsInf(result)) && !isinf(num))
-		float_overflow_error();
-	if (unlikely(HalfIsZero(result)) && num != 0.0)
-		float_underflow_error();
-
-	return result;
-}
-
-/*
- * Convert textual representation to internal representation
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_in);
-Datum
-half_in(PG_FUNCTION_ARGS)
-{
-	char	   *num = PG_GETARG_CSTRING(0);
-	char	   *orig_num;
-	float		val;
-	char	   *endptr;
-
-	orig_num = num;
-
-	/* Skip leading whitespace */
-	while (*num != '\0' && isspace((unsigned char) *num))
-		num++;
-
-	/*
-	 * Check for an empty-string input to begin with, to avoid the vagaries of
-	 * strtof() on different platforms.
-	 */
-	if (*num == '\0')
-		ereport(ERROR,
-				(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
-				 errmsg("invalid input syntax for type %s: \"%s\"",
-						"half", orig_num)));
-
-	val = strtof(num, &endptr);
-
-	if (val < -HALF_MAX || val > HALF_MAX)
-		ereport(ERROR,
-				(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
-				 errmsg("\"%s\" is out of range for type %s",
-						orig_num, "half")));
-
-	/* Skip trailing whitespace */
-	while (*endptr != '\0' && isspace((unsigned char) *endptr))
-		endptr++;
-
-	/* If there is any junk left at the end of the string, bail out */
-	if (*endptr != '\0')
-		ereport(ERROR,
-				(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
-				 errmsg("invalid input syntax for type %s: \"%s\"",
-						"half", orig_num)));
-
-	PG_RETURN_HALF(Float4ToHalf(val));
-}
-
-/*
- * Convert internal representation to textual representation
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_out);
-Datum
-half_out(PG_FUNCTION_ARGS)
-{
-	float		num = HalfToFloat4(PG_GETARG_HALF(0));
-	char	   *ascii = (char *) palloc(32);
-	int			ndig = FLT_DIG + extra_float_digits;
-
-	if (extra_float_digits > 0)
-	{
-		float_to_shortest_decimal_buf(num, ascii);
-		PG_RETURN_CSTRING(ascii);
-	}
-
-	(void) pg_strfromd(ascii, 32, ndig, num);
-	PG_RETURN_CSTRING(ascii);
-}
-
-/*
- * Convert external binary representation to internal representation
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_recv);
-Datum
-half_recv(PG_FUNCTION_ARGS)
-{
-	StringInfo	buf = (StringInfo) PG_GETARG_POINTER(0);
-
-	PG_RETURN_HALF(pq_getmsghalf(buf));
-}
-
-/*
- * Convert internal representation to the external binary representation
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_send);
-Datum
-half_send(PG_FUNCTION_ARGS)
-{
-	half		arg1 = PG_GETARG_HALF(0);
-	StringInfoData buf;
-
-	pq_begintypsend(&buf);
-	pq_sendhalf(&buf, arg1);
-	PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
-}
-
-/*
- * Convert integer to half
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(integer_to_half);
-Datum
-integer_to_half(PG_FUNCTION_ARGS)
-{
-	int32		i = PG_GETARG_INT32(0);
-
-	/* TODO Figure out correct error */
-	float		f = (float) i;
-	half		h = Float4ToHalf(f);
-
-	PG_RETURN_HALF(h);
-}
-
-/*
- * Convert numeric to half
- *
- * TODO Improve error message if out of range
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(numeric_to_half);
-Datum
-numeric_to_half(PG_FUNCTION_ARGS)
-{
-	Numeric		num = PG_GETARG_NUMERIC(0);
-	float		f = DatumGetFloat4(DirectFunctionCall1(numeric_float4, NumericGetDatum(num)));
-	half		h = Float4ToHalf(f);
-
-	PG_RETURN_HALF(h);
-}
-
-/*
- * Convert half to numeric
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_to_numeric);
-Datum
-half_to_numeric(PG_FUNCTION_ARGS)
-{
-	half		h = PG_GETARG_HALF(0);
-	float		f = HalfToFloat4(h);
-	Numeric		num = DatumGetNumeric(DirectFunctionCall1(float4_numeric, Float4GetDatum(f)));
-
-	PG_RETURN_NUMERIC(num);
-}
-
-/*
- * Convert float4 to half
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(float4_to_half);
-Datum
-float4_to_half(PG_FUNCTION_ARGS)
-{
-	float		f = PG_GETARG_FLOAT4(0);
-	half		h = Float4ToHalf(f);
-
-	PG_RETURN_HALF(h);
-}
-
-/*
- * Convert half to float4
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_to_float4);
-Datum
-half_to_float4(PG_FUNCTION_ARGS)
-{
-	half		h = PG_GETARG_HALF(0);
-	float		f = HalfToFloat4(h);
-
-	PG_RETURN_FLOAT4(f);
-}
-
-/*
- * Convert float8 to half
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(float8_to_half);
-Datum
-float8_to_half(PG_FUNCTION_ARGS)
-{
-	float8		d = PG_GETARG_FLOAT8(0);
-	half		h = Float8ToHalf(d);
-
-	PG_RETURN_HALF(h);
-}
-
-/*
- * Convert half to float8
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_to_float8);
-Datum
-half_to_float8(PG_FUNCTION_ARGS)
-{
-	half		h = PG_GETARG_HALF(0);
-	float		f = HalfToFloat4(h);
-
-	PG_RETURN_FLOAT8((double) f);
-}
-
-/*
- * Get the L2 distance between half arrays
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_l2_distance);
-Datum
-half_l2_distance(PG_FUNCTION_ARGS)
-{
-	ArrayType  *a = PG_GETARG_ARRAYTYPE_P(0);
-	ArrayType  *b = PG_GETARG_ARRAYTYPE_P(1);
-	half	   *ax = (half *) ARR_DATA_PTR(a);
-	half	   *bx = (half *) ARR_DATA_PTR(b);
-	float		distance = 0.0;
-	int			dim = CheckDims(a, b);
-
-	/* Auto-vectorized */
-	for (int i = 0; i < dim; i++)
-	{
-		float		diff = HalfToFloat4(ax[i]) - HalfToFloat4(bx[i]);
-
-		distance += diff * diff;
-	}
-
-	PG_RETURN_FLOAT8(sqrt((double) distance));
-}
-
-/*
- * Get the L2 squared distance between half arrays
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_l2_squared_distance);
-Datum
-half_l2_squared_distance(PG_FUNCTION_ARGS)
-{
-	ArrayType  *a = PG_GETARG_ARRAYTYPE_P(0);
-	ArrayType  *b = PG_GETARG_ARRAYTYPE_P(1);
-	half	   *ax = (half *) ARR_DATA_PTR(a);
-	half	   *bx = (half *) ARR_DATA_PTR(b);
-	float		distance = 0.0;
-	int			dim = CheckDims(a, b);
-
-	/* Auto-vectorized */
-	for (int i = 0; i < dim; i++)
-	{
-		float		diff = HalfToFloat4(ax[i]) - HalfToFloat4(bx[i]);
-
-		distance += diff * diff;
-	}
-
-	PG_RETURN_FLOAT8((double) distance);
-}
-
-/*
- * Get the inner product of two half arrays
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_inner_product);
-Datum
-half_inner_product(PG_FUNCTION_ARGS)
-{
-	ArrayType  *a = PG_GETARG_ARRAYTYPE_P(0);
-	ArrayType  *b = PG_GETARG_ARRAYTYPE_P(1);
-	half	   *ax = (half *) ARR_DATA_PTR(a);
-	half	   *bx = (half *) ARR_DATA_PTR(b);
-	float		distance = 0.0;
-	int			dim = CheckDims(a, b);
-
-	/* Auto-vectorized */
-	for (int i = 0; i < dim; i++)
-		distance += HalfToFloat4(ax[i]) * HalfToFloat4(bx[i]);
-
-	PG_RETURN_FLOAT8((double) distance);
-}
-
-/*
- * Get the negative inner product of two half arrays
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_negative_inner_product);
-Datum
-half_negative_inner_product(PG_FUNCTION_ARGS)
-{
-	ArrayType  *a = PG_GETARG_ARRAYTYPE_P(0);
-	ArrayType  *b = PG_GETARG_ARRAYTYPE_P(1);
-	half	   *ax = (half *) ARR_DATA_PTR(a);
-	half	   *bx = (half *) ARR_DATA_PTR(b);
-	float		distance = 0.0;
-	int			dim = CheckDims(a, b);
-
-	/* Auto-vectorized */
-	for (int i = 0; i < dim; i++)
-		distance += HalfToFloat4(ax[i]) * HalfToFloat4(bx[i]);
-
-	PG_RETURN_FLOAT8((double) distance * -1);
-}
-
-/*
- * Get the cosine distance between two half arrays
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_cosine_distance);
-Datum
-half_cosine_distance(PG_FUNCTION_ARGS)
-{
-	ArrayType  *a = PG_GETARG_ARRAYTYPE_P(0);
-	ArrayType  *b = PG_GETARG_ARRAYTYPE_P(1);
-	half	   *ax = (half *) ARR_DATA_PTR(a);
-	half	   *bx = (half *) ARR_DATA_PTR(b);
-	float		distance = 0.0;
-	float		norma = 0.0;
-	float		normb = 0.0;
-	double		similarity;
-	int			dim = CheckDims(a, b);
-
-	/* Auto-vectorized */
-	for (int i = 0; i < dim; i++)
-	{
-		float		axi = HalfToFloat4(ax[i]);
-		float		bxi = HalfToFloat4(bx[i]);
-
-		distance += axi * bxi;
-		norma += axi * axi;
-		normb += bxi * bxi;
-	}
-
-	/* Use sqrt(a * b) over sqrt(a) * sqrt(b) */
-	similarity = (double) distance / sqrt((double) norma * (double) normb);
-
-#ifdef _MSC_VER
-	/* /fp:fast may not propagate NaN */
-	if (isnan(similarity))
-		PG_RETURN_FLOAT8(NAN);
-#endif
-
-	/* Keep in range */
-	if (similarity > 1)
-		similarity = 1;
-	else if (similarity < -1)
-		similarity = -1;
-
-	PG_RETURN_FLOAT8(1 - similarity);
-}
-
-/*
- * Get the L1 distance between two half arrays
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(half_l1_distance);
-Datum
-half_l1_distance(PG_FUNCTION_ARGS)
-{
-	ArrayType  *a = PG_GETARG_ARRAYTYPE_P(0);
-	ArrayType  *b = PG_GETARG_ARRAYTYPE_P(1);
-	half	   *ax = (half *) ARR_DATA_PTR(a);
-	half	   *bx = (half *) ARR_DATA_PTR(b);
-	float		distance = 0.0;
-	int			dim = CheckDims(a, b);
-
-	/* Auto-vectorized */
-	for (int i = 0; i < dim; i++)
-		distance += fabsf(HalfToFloat4(ax[i]) - HalfToFloat4(bx[i]));
-
-	PG_RETURN_FLOAT8((double) distance);
-}

src/half.h

@@ -1,23 +0,0 @@
-#ifndef HALF_H
-#define HALF_H
-
-#define __STDC_WANT_IEC_60559_TYPES_EXT__
-
-#include <float.h>
-
-#ifdef __FLT16_MAX__
-#define FLT16_SUPPORT
-#endif
-
-#ifdef FLT16_SUPPORT
-#define half _Float16
-#define HALF_MAX FLT16_MAX
-#else
-#define half uint16
-#define HALF_MAX 65504
-#endif
-
-#define PG_GETARG_HALF(n)  DatumGetHalf(PG_GETARG_DATUM(n))
-#define PG_RETURN_HALF(x)  return HalfGetDatum(x)
-
-#endif

src/hnswutils.c

@@ -177,8 +177,6 @@ HnswInitElement(ItemPointer heaptid, int m, double ml, int maxLevel)
 
 	HnswInitNeighbors(element, m);
 
-	element->value = PointerGetDatum(NULL);
-
 	return element;
 }
 

test/expected/copy.out

@@ -1,15 +1,15 @@
-CREATE TABLE t (val vector(3), val2 half[]);
+CREATE TABLE t (val vector(3));
-INSERT INTO t (val, val2) VALUES ('[0,0,0]', '{0,0,0}'), ('[1,2,3]', '{1,2,3}'), ('[1,1,1]', '{1,1,1}'), (NULL, NULL);
+INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
-CREATE TABLE t2 (val vector(3), val2 half[]);
+CREATE TABLE t2 (val vector(3));
 \copy t TO 'results/data.bin' WITH (FORMAT binary)
 \copy t2 FROM 'results/data.bin' WITH (FORMAT binary)
 SELECT * FROM t2 ORDER BY val;
-   val   |  val2   
+   val   
----------+---------
+---------
- [0,0,0] | {0,0,0}
+ [0,0,0]
- [1,1,1] | {1,1,1}
+ [1,1,1]
- [1,2,3] | {1,2,3}
+ [1,2,3]
-         | 
+ 
 (4 rows)
 
 DROP TABLE t;

test/expected/functions.out

@@ -54,105 +54,105 @@ SELECT vector_norm('[3e37,4e37]')::real;
        5e+37
 (1 row)
 
-SELECT l2_distance('[0,0]'::vector, '[3,4]');
+SELECT l2_distance('[0,0]', '[3,4]');
  l2_distance 
 -------------
            5
 (1 row)
 
-SELECT l2_distance('[0,0]'::vector, '[0,1]');
+SELECT l2_distance('[0,0]', '[0,1]');
  l2_distance 
 -------------
            1
 (1 row)
 
-SELECT l2_distance('[1,2]'::vector, '[3]');
+SELECT l2_distance('[1,2]', '[3]');
 ERROR:  different vector dimensions 2 and 1
-SELECT l2_distance('[3e38]'::vector, '[-3e38]');
+SELECT l2_distance('[3e38]', '[-3e38]');
  l2_distance 
 -------------
     Infinity
 (1 row)
 
-SELECT inner_product('[1,2]'::vector, '[3,4]');
+SELECT inner_product('[1,2]', '[3,4]');
  inner_product 
 ---------------
             11
 (1 row)
 
-SELECT inner_product('[1,2]'::vector, '[3]');
+SELECT inner_product('[1,2]', '[3]');
 ERROR:  different vector dimensions 2 and 1
-SELECT inner_product('[3e38]'::vector, '[3e38]');
+SELECT inner_product('[3e38]', '[3e38]');
  inner_product 
 ---------------
       Infinity
 (1 row)
 
-SELECT cosine_distance('[1,2]'::vector, '[2,4]');
+SELECT cosine_distance('[1,2]', '[2,4]');
  cosine_distance 
 -----------------
                0
 (1 row)
 
-SELECT cosine_distance('[1,2]'::vector, '[0,0]');
+SELECT cosine_distance('[1,2]', '[0,0]');
  cosine_distance 
 -----------------
              NaN
 (1 row)
 
-SELECT cosine_distance('[1,1]'::vector, '[1,1]');
+SELECT cosine_distance('[1,1]', '[1,1]');
  cosine_distance 
 -----------------
                0
 (1 row)
 
-SELECT cosine_distance('[1,0]'::vector, '[0,2]');
+SELECT cosine_distance('[1,0]', '[0,2]');
  cosine_distance 
 -----------------
                1
 (1 row)
 
-SELECT cosine_distance('[1,1]'::vector, '[-1,-1]');
+SELECT cosine_distance('[1,1]', '[-1,-1]');
  cosine_distance 
 -----------------
                2
 (1 row)
 
-SELECT cosine_distance('[1,2]'::vector, '[3]');
+SELECT cosine_distance('[1,2]', '[3]');
 ERROR:  different vector dimensions 2 and 1
-SELECT cosine_distance('[1,1]'::vector, '[1.1,1.1]');
+SELECT cosine_distance('[1,1]', '[1.1,1.1]');
  cosine_distance 
 -----------------
                0
 (1 row)
 
-SELECT cosine_distance('[1,1]'::vector, '[-1.1,-1.1]');
+SELECT cosine_distance('[1,1]', '[-1.1,-1.1]');
  cosine_distance 
 -----------------
                2
 (1 row)
 
-SELECT cosine_distance('[3e38]'::vector, '[3e38]');
+SELECT cosine_distance('[3e38]', '[3e38]');
  cosine_distance 
 -----------------
              NaN
 (1 row)
 
-SELECT l1_distance('[0,0]'::vector, '[3,4]');
+SELECT l1_distance('[0,0]', '[3,4]');
  l1_distance 
 -------------
            7
 (1 row)
 
-SELECT l1_distance('[0,0]'::vector, '[0,1]');
+SELECT l1_distance('[0,0]', '[0,1]');
  l1_distance 
 -------------
            1
 (1 row)
 
-SELECT l1_distance('[1,2]'::vector, '[3]');
+SELECT l1_distance('[1,2]', '[3]');
 ERROR:  different vector dimensions 2 and 1
-SELECT l1_distance('[3e38]'::vector, '[-3e38]');
+SELECT l1_distance('[3e38]', '[-3e38]');
  l1_distance 
 -------------
     Infinity

test/expected/half.out

@@ -1,226 +0,0 @@
-SELECT '1.5'::half;
- half 
-------
- 1.5
-(1 row)
-
-SELECT '65504'::half;
- half  
--------
- 65504
-(1 row)
-
-SELECT '65505'::half;
-ERROR:  "65505" is out of range for type half
-LINE 1: SELECT '65505'::half;
-               ^
-SELECT '-65504'::half;
-  half  
---------
- -65504
-(1 row)
-
-SELECT '-65505'::half;
-ERROR:  "-65505" is out of range for type half
-LINE 1: SELECT '-65505'::half;
-               ^
-SELECT ''::half;
-ERROR:  invalid input syntax for type half: ""
-LINE 1: SELECT ''::half;
-               ^
-SELECT ' '::half;
-ERROR:  invalid input syntax for type half: " "
-LINE 1: SELECT ' '::half;
-               ^
-SELECT '-'::half;
-ERROR:  invalid input syntax for type half: "-"
-LINE 1: SELECT '-'::half;
-               ^
-SELECT ' 1.5'::half;
- half 
-------
- 1.5
-(1 row)
-
-SELECT '1.5 '::half;
- half 
-------
- 1.5
-(1 row)
-
-SELECT '1.5a'::half;
-ERROR:  invalid input syntax for type half: "1.5a"
-LINE 1: SELECT '1.5a'::half;
-               ^
-SELECT '{1,2,3}'::half[];
-  half   
----------
- {1,2,3}
-(1 row)
-
-SELECT '{1,2,3}'::half[]::real[];
- float4  
----------
- {1,2,3}
-(1 row)
-
-SELECT '65505'::integer::half;
- half  
--------
- 65504
-(1 row)
-
-SELECT 'NaN'::real::half;
- half 
-------
- NaN
-(1 row)
-
-SELECT 'Infinity'::real::half;
-   half   
-----------
- Infinity
-(1 row)
-
-SELECT '1e-38'::real::half;
-ERROR:  value out of range: underflow
-SELECT '1.5'::half::real;
- float4 
---------
-    1.5
-(1 row)
-
-SELECT '1.5'::real::half;
- half 
-------
- 1.5
-(1 row)
-
-SELECT '1.5'::half::double precision;
- float8 
---------
-    1.5
-(1 row)
-
-SELECT '1.5'::double precision::half;
- half 
-------
- 1.5
-(1 row)
-
-SELECT '1.5'::half::numeric;
- numeric 
----------
-     1.5
-(1 row)
-
-SELECT '1.5'::numeric::half;
- half 
-------
- 1.5
-(1 row)
-
-SELECT l2_distance('{0,0}'::half[], '{3,4}'::half[]);
- l2_distance 
--------------
-           5
-(1 row)
-
-SELECT l2_distance('{0,0}'::half[], '{0,1}'::half[]);
- l2_distance 
--------------
-           1
-(1 row)
-
-SELECT l2_distance('{1,2}'::half[], '{3}'::half[]);
-ERROR:  different dimensions 2 and 1
-SELECT '{0,0}'::half[] <-> '{3,4}'::half[];
- ?column? 
-----------
-        5
-(1 row)
-
-SELECT inner_product('{1,2}'::half[], '{3,4}'::half[]);
- inner_product 
----------------
-            11
-(1 row)
-
-SELECT inner_product('{1,2}'::half[], '{3}'::half[]);
-ERROR:  different dimensions 2 and 1
-SELECT inner_product('{65504}'::half[], '{65504}'::half[]);
- inner_product 
----------------
-    4290774016
-(1 row)
-
-SELECT '{1,2}'::half[] <#> '{3,4}'::half[];
- ?column? 
-----------
-      -11
-(1 row)
-
-SELECT cosine_distance('{1,2}'::half[], '{2,4}'::half[]);
- cosine_distance 
------------------
-               0
-(1 row)
-
-SELECT cosine_distance('{1,2}'::half[], '{0,0}'::half[]);
- cosine_distance 
------------------
-             NaN
-(1 row)
-
-SELECT cosine_distance('{1,1}'::half[], '{1,1}'::half[]);
- cosine_distance 
------------------
-               0
-(1 row)
-
-SELECT cosine_distance('{1,0}'::half[], '{0,2}'::half[]);
- cosine_distance 
------------------
-               1
-(1 row)
-
-SELECT cosine_distance('{1,1}'::half[], '{-1,-1}'::half[]);
- cosine_distance 
------------------
-               2
-(1 row)
-
-SELECT cosine_distance('{1,2}'::half[], '{3}'::half[]);
-ERROR:  different dimensions 2 and 1
-SELECT cosine_distance('{1,1}'::half[], '{1.1,1.1}'::half[]);
- cosine_distance 
------------------
-               0
-(1 row)
-
-SELECT cosine_distance('{1,1}'::half[], '{-1.1,-1.1}'::half[]);
- cosine_distance 
------------------
-               2
-(1 row)
-
-SELECT '{1,2}'::half[] <=> '{2,4}'::half[];
- ?column? 
-----------
-        0
-(1 row)
-
-SELECT l1_distance('{0,0}'::half[], '{3,4}');
- l1_distance 
--------------
-           7
-(1 row)
-
-SELECT l1_distance('{0,0}'::half[], '{0,1}');
- l1_distance 
--------------
-           1
-(1 row)
-
-SELECT l1_distance('{1,2}'::half[], '{3}');
-ERROR:  different dimensions 2 and 1

test/sql/copy.sql

@@ -1,7 +1,7 @@
-CREATE TABLE t (val vector(3), val2 half[]);
+CREATE TABLE t (val vector(3));
-INSERT INTO t (val, val2) VALUES ('[0,0,0]', '{0,0,0}'), ('[1,2,3]', '{1,2,3}'), ('[1,1,1]', '{1,1,1}'), (NULL, NULL);
+INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
 
-CREATE TABLE t2 (val vector(3), val2 half[]);
+CREATE TABLE t2 (val vector(3));
 
 \copy t TO 'results/data.bin' WITH (FORMAT binary)
 \copy t2 FROM 'results/data.bin' WITH (FORMAT binary)

test/sql/functions.sql

@@ -13,29 +13,29 @@ SELECT vector_norm('[3,4]');
 SELECT vector_norm('[0,1]');
 SELECT vector_norm('[3e37,4e37]')::real;
 
-SELECT l2_distance('[0,0]'::vector, '[3,4]');
+SELECT l2_distance('[0,0]', '[3,4]');
-SELECT l2_distance('[0,0]'::vector, '[0,1]');
+SELECT l2_distance('[0,0]', '[0,1]');
-SELECT l2_distance('[1,2]'::vector, '[3]');
+SELECT l2_distance('[1,2]', '[3]');
-SELECT l2_distance('[3e38]'::vector, '[-3e38]');
+SELECT l2_distance('[3e38]', '[-3e38]');
 
-SELECT inner_product('[1,2]'::vector, '[3,4]');
+SELECT inner_product('[1,2]', '[3,4]');
-SELECT inner_product('[1,2]'::vector, '[3]');
+SELECT inner_product('[1,2]', '[3]');
-SELECT inner_product('[3e38]'::vector, '[3e38]');
+SELECT inner_product('[3e38]', '[3e38]');
 
-SELECT cosine_distance('[1,2]'::vector, '[2,4]');
+SELECT cosine_distance('[1,2]', '[2,4]');
-SELECT cosine_distance('[1,2]'::vector, '[0,0]');
+SELECT cosine_distance('[1,2]', '[0,0]');
-SELECT cosine_distance('[1,1]'::vector, '[1,1]');
+SELECT cosine_distance('[1,1]', '[1,1]');
-SELECT cosine_distance('[1,0]'::vector, '[0,2]');
+SELECT cosine_distance('[1,0]', '[0,2]');
-SELECT cosine_distance('[1,1]'::vector, '[-1,-1]');
+SELECT cosine_distance('[1,1]', '[-1,-1]');
-SELECT cosine_distance('[1,2]'::vector, '[3]');
+SELECT cosine_distance('[1,2]', '[3]');
-SELECT cosine_distance('[1,1]'::vector, '[1.1,1.1]');
+SELECT cosine_distance('[1,1]', '[1.1,1.1]');
-SELECT cosine_distance('[1,1]'::vector, '[-1.1,-1.1]');
+SELECT cosine_distance('[1,1]', '[-1.1,-1.1]');
-SELECT cosine_distance('[3e38]'::vector, '[3e38]');
+SELECT cosine_distance('[3e38]', '[3e38]');
 
-SELECT l1_distance('[0,0]'::vector, '[3,4]');
+SELECT l1_distance('[0,0]', '[3,4]');
-SELECT l1_distance('[0,0]'::vector, '[0,1]');
+SELECT l1_distance('[0,0]', '[0,1]');
-SELECT l1_distance('[1,2]'::vector, '[3]');
+SELECT l1_distance('[1,2]', '[3]');
-SELECT l1_distance('[3e38]'::vector, '[-3e38]');
+SELECT l1_distance('[3e38]', '[-3e38]');
 
 SELECT avg(v) FROM unnest(ARRAY['[1,2,3]'::vector, '[3,5,7]']) v;
 SELECT avg(v) FROM unnest(ARRAY['[1,2,3]'::vector, '[3,5,7]', NULL]) v;

test/sql/half.sql

@@ -1,53 +0,0 @@
-SELECT '1.5'::half;
-SELECT '65504'::half;
-SELECT '65505'::half;
-SELECT '-65504'::half;
-SELECT '-65505'::half;
-
-SELECT ''::half;
-SELECT ' '::half;
-SELECT '-'::half;
-SELECT ' 1.5'::half;
-SELECT '1.5 '::half;
-SELECT '1.5a'::half;
-
-SELECT '{1,2,3}'::half[];
-SELECT '{1,2,3}'::half[]::real[];
-
-SELECT '65505'::integer::half;
-SELECT 'NaN'::real::half;
-SELECT 'Infinity'::real::half;
-SELECT '1e-38'::real::half;
-
-SELECT '1.5'::half::real;
-SELECT '1.5'::real::half;
-
-SELECT '1.5'::half::double precision;
-SELECT '1.5'::double precision::half;
-
-SELECT '1.5'::half::numeric;
-SELECT '1.5'::numeric::half;
-
-SELECT l2_distance('{0,0}'::half[], '{3,4}'::half[]);
-SELECT l2_distance('{0,0}'::half[], '{0,1}'::half[]);
-SELECT l2_distance('{1,2}'::half[], '{3}'::half[]);
-SELECT '{0,0}'::half[] <-> '{3,4}'::half[];
-
-SELECT inner_product('{1,2}'::half[], '{3,4}'::half[]);
-SELECT inner_product('{1,2}'::half[], '{3}'::half[]);
-SELECT inner_product('{65504}'::half[], '{65504}'::half[]);
-SELECT '{1,2}'::half[] <#> '{3,4}'::half[];
-
-SELECT cosine_distance('{1,2}'::half[], '{2,4}'::half[]);
-SELECT cosine_distance('{1,2}'::half[], '{0,0}'::half[]);
-SELECT cosine_distance('{1,1}'::half[], '{1,1}'::half[]);
-SELECT cosine_distance('{1,0}'::half[], '{0,2}'::half[]);
-SELECT cosine_distance('{1,1}'::half[], '{-1,-1}'::half[]);
-SELECT cosine_distance('{1,2}'::half[], '{3}'::half[]);
-SELECT cosine_distance('{1,1}'::half[], '{1.1,1.1}'::half[]);
-SELECT cosine_distance('{1,1}'::half[], '{-1.1,-1.1}'::half[]);
-SELECT '{1,2}'::half[] <=> '{2,4}'::half[];
-
-SELECT l1_distance('{0,0}'::half[], '{3,4}');
-SELECT l1_distance('{0,0}'::half[], '{0,1}');
-SELECT l1_distance('{1,2}'::half[], '{3}');