Function cmp_numeric_string

src/jrd/cvt2.cpp:206–236

static int cmp_numeric_string(const dsc* arg1, const dsc* arg2, Firebird::DecimalStatus decSt)
{
/**************************************
 *
 *	c m p _ n u m e r i c _ s t r i n g
 *
 **************************************
 *
 * Functional description
 *	Compare any numeric value with string.  Return (-1, 0, 1) if a<b, a=b, or a>b.
 *
 **************************************/
	fb_assert(arg1->isNumeric());
	fb_assert(arg2->isText());

	Decimal128 buffer;		// enough to fit any required data
	SSHORT scale = 0;
	UCHAR* text;
	USHORT ttype;
	USHORT textLen = CVT_get_string_ptr(arg2, &ttype, &text, nullptr, 0, 0);

	dsc num2;
	num2.dsc_dtype = CVT_get_numeric(text, textLen, &scale, &buffer);
	num2.dsc_address = (UCHAR*)&buffer;
	num2.dsc_scale = scale;
	num2.dsc_length = type_lengths[num2.dsc_dtype];
	num2.dsc_sub_type = 0;
	num2.dsc_flags = 0;

	return CVT2_compare(arg1, &num2, decSt);
}


int CVT2_compare(const dsc* arg1, const dsc* arg2, Firebird::DecimalStatus decSt)