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Support BigInt to number conversion using Number constructor (#4121)

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JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-08-12 16:33:31 +02:00
committed by GitHub
parent 0c154306a8
commit 6adf0c1a87
21 changed files with 266 additions and 54 deletions
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jerry-core/ecma/operations/ecma-big-uint.c
+26 -26
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@@ -93,6 +93,32 @@ ecma_big_uint_extend (ecma_extended_primitive_t *value_p, /**< BigUInt value */
return result_p;
} /* ecma_big_uint_extend */
/**
* Count the number of leading zero bits of a digit
*
* return number of leading zero bits
*/
ecma_bigint_digit_t
ecma_big_uint_count_leading_zero (ecma_bigint_digit_t digit) /**< digit value */
{
ecma_bigint_digit_t shift = 4 * sizeof (ecma_bigint_digit_t);
ecma_bigint_digit_t result = 8 * sizeof (ecma_bigint_digit_t);
do
{
ecma_bigint_digit_t value = digit >> shift;
if (value > 0)
{
digit = value;
result -= shift;
}
shift >>= 1;
}
while (shift > 0);
return result - digit;
} /* ecma_big_uint_count_leading_zero */
/**
* Helper function which discards the leading zero digits of a BigUInt value
*
@@ -876,32 +902,6 @@ ecma_big_uint_mul (ecma_extended_primitive_t *left_value_p, /**< left BigUInt va
return ecma_big_uint_extend (result_p, extra_space[0]);
} /* ecma_big_uint_mul */
/**
* Count the number of leading zero bits of a digit
*
* return new BigUInt value, NULL on error
*/
static ecma_bigint_digit_t
ecma_big_uint_count_leading_zero (ecma_bigint_digit_t digit) /**< digit value */
{
ecma_bigint_digit_t shift = 4 * sizeof (ecma_bigint_digit_t);
ecma_bigint_digit_t result = 8 * sizeof (ecma_bigint_digit_t);
do
{
ecma_bigint_digit_t value = digit >> shift;
if (value > 0)
{
digit = value;
result -= shift;
}
shift >>= 1;
}
while (shift > 0);
return result - digit;
} /* ecma_big_uint_count_leading_zero */
/**
* Divide left BigUInt value with right digit value
*