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src/bitvec.c
69 строк
1 KB
Andrew Kane
Fixed compilation warning with MSVC and Postgres 16 - fixes #598
16 июн 2024, 22:09
16 июн 2024, 22:09
61870a0
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#include "postgres.h" #include "bitutils.h" #include "bitvec.h" #include "utils/varbit.h" #include "vector.h" #if PG_VERSION_NUM >= 160000 #include "varatt.h" #endif /* * Allocate and initialize a new bit vector */ VarBit * InitBitVector(int dim) { VarBit *result; int size; size = VARBITTOTALLEN(dim); result = (VarBit *) palloc0(size); SET_VARSIZE(result, size); VARBITLEN(result) = dim; return result; } /* * Ensure same dimensions */ static inline void CheckDims(VarBit *a, VarBit *b) { if (VARBITLEN(a) != VARBITLEN(b)) ereport(ERROR, (errcode(ERRCODE_DATA_EXCEPTION), errmsg("different bit lengths %u and %u", VARBITLEN(a), VARBITLEN(b)))); } /* * Get the Hamming distance between two bit vectors */ FUNCTION_PREFIX PG_FUNCTION_INFO_V1(hamming_distance); Datum hamming_distance(PG_FUNCTION_ARGS) { VarBit *a = PG_GETARG_VARBIT_P(0); VarBit *b = PG_GETARG_VARBIT_P(1); CheckDims(a, b); PG_RETURN_FLOAT8((double) BitHammingDistance(VARBITBYTES(a), VARBITS(a), VARBITS(b), 0)); } /* * Get the Jaccard distance between two bit vectors */ FUNCTION_PREFIX PG_FUNCTION_INFO_V1(jaccard_distance); Datum jaccard_distance(PG_FUNCTION_ARGS) { VarBit *a = PG_GETARG_VARBIT_P(0); VarBit *b = PG_GETARG_VARBIT_P(1); CheckDims(a, b); PG_RETURN_FLOAT8(BitJaccardDistance(VARBITBYTES(a), VARBITS(a), VARBITS(b), 0, 0, 0)); }