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New hex function release

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Bugs and tests fixed
This commit is contained in:
millb 2019-09-23 18:47:34 +03:00
parent 4f24512ba4
commit bd29efdbbe
3 changed files with 19 additions and 18 deletions
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25
dbms/src/Functions/FunctionsCoding.h
View File

@ -946,9 +946,10 @@ public:
{
WhichDataType which(arguments[0]);
if (!which.isStringOrFixedString()
&& !which.isDateOrDateTime()
&& !which.isUInt() && !which.isFloat())
if (!which.isStringOrFixedString() &&
!which.isDateOrDateTime() &&
!which.isUInt() &&
!which.isFloat())
throw Exception("Illegal type " + arguments[0]->getName() + " of argument of function " + getName(),
ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
@ -1026,7 +1027,7 @@ public:
{
const ColumnVector<T> * col_vec = checkAndGetColumn<ColumnVector<T>>(col);
static constexpr size_t MAX_FLOAT_HEX_LENGTH = sizeof(T) * 2 + 1; /// Including trailing zero byte.
static constexpr size_t FLOAT_HEX_LENGTH = sizeof(T) * 2 + 1; /// Including trailing zero byte.
if (col_vec)
{
@ -1038,27 +1039,19 @@ public:
size_t size = in_vec.size();
out_offsets.resize(size);
out_vec.resize(size * 3 + MAX_FLOAT_HEX_LENGTH); /// 3 is length of one byte in hex plus zero byte.
out_vec.resize(size * FLOAT_HEX_LENGTH);
size_t pos = 0;
char * out = reinterpret_cast<char *>(&out_vec[0]);
for (size_t i = 0; i < size; ++i)
{
/// Manual exponential growth, so as not to rely on the linear amortized work time of `resize` (no one guarantees it).
if (pos + MAX_FLOAT_HEX_LENGTH > out_vec.size())
out_vec.resize(out_vec.size() * 2 + MAX_FLOAT_HEX_LENGTH);
char * begin = reinterpret_cast<char *>(&out_vec[pos]);
char * end = begin;
const UInt8 * in_pos = reinterpret_cast<const UInt8 *>(&in_vec[i]);
executeOneString(in_pos, in_pos + sizeof(in_vec[i]), end);
executeOneString(in_pos, in_pos + sizeof(T), out);
pos += end - begin;
pos += FLOAT_HEX_LENGTH;
out_offsets[i] = pos;
}
out_vec.resize(pos);
col_res = std::move(col_str);
return true;
}

7
dbms/tests/queries/0_stateless/01013_hex_float.reference
View File

@ -4,4 +4,9 @@
2342920CA19CC73B
7DC39425AD49B254
2C616D8C9DF0423F
BA490C022BFF5EC0
3BDF4F8D97FE5EC0
0A57C742
00004843
00004943
0000000000406940
0000000000606940

5
dbms/tests/queries/0_stateless/01013_hex_float.sql
View File

@ -4,4 +4,7 @@ SELECT hex(1e+18);
SELECT hex(1e-20);
SELECT hex(1e+100);
SELECT hex(0.000578);
SELECt hex(-123.987);
SELECT hex(-123.978);
SELECT hex(toFloat32(99.67));
SELECT hex(toFloat32(number)) FROM numbers(200, 2);
SELECT hex(toFloat64(number)) FROM numbers(202, 2);