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Reverting c2933d9e44eb5346161964c7c52f1ca793c4c7b4 changes of ecma_number_{is,make}_infinity routines.

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This commit is contained in:
Ruben Ayrapetyan
2014-11-19 17:54:06 +03:00
parent 27827e607c
commit 30ff59fca3
1 changed files with 5 additions and 28 deletions
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src/libecmaobjects/ecma-helpers-number.c
+5 -28
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@@ -338,20 +338,9 @@ ecma_number_t
ecma_number_make_infinity (bool sign) /**< true - for negative Infinity, ecma_number_make_infinity (bool sign) /**< true - for negative Infinity,
false - for positive Infinity */ false - for positive Infinity */
{ {
const ecma_number_t positive_infinity = ECMA_NUMBER_ONE / ECMA_NUMBER_ZERO; return ecma_number_pack (sign,
const ecma_number_t negative_infinity = ecma_number_negate (positive_infinity); (1u << ECMA_NUMBER_BIASED_EXP_WIDTH) - 1u,
0u);
ecma_number_t sign_infinity = (sign ? negative_infinity : positive_infinity);
#ifndef JERRY_NDEBUG
ecma_number_t sign_infinity_ieee754 = ecma_number_pack (sign,
(1u << ECMA_NUMBER_BIASED_EXP_WIDTH) - 1u,
0u);
JERRY_ASSERT (sign_infinity == sign_infinity_ieee754);
#endif /* !JERRY_NDEBUG */
return sign_infinity;
} /* ecma_number_make_infinity */ } /* ecma_number_make_infinity */
/** /**
@@ -405,24 +394,12 @@ ecma_number_is_infinity (ecma_number_t num) /**< ecma-number */
{ {
JERRY_ASSERT (!ecma_number_is_nan (num)); JERRY_ASSERT (!ecma_number_is_nan (num));
const ecma_number_t positive_infinity = ECMA_NUMBER_ONE / ECMA_NUMBER_ZERO;
const ecma_number_t negative_infinity = -positive_infinity;
bool is_infinity = (num == positive_infinity || num == negative_infinity);
#ifndef JERRY_NDEBUG
uint32_t biased_exp = ecma_number_get_biased_exponent_field (num); uint32_t biased_exp = ecma_number_get_biased_exponent_field (num);
uint64_t fraction = ecma_number_get_fraction_field (num); uint64_t fraction = ecma_number_get_fraction_field (num);
/* IEEE-754 2008, 3.4, b */ /* IEEE-754 2008, 3.4, b */
return ((biased_exp == (1u << ECMA_NUMBER_BIASED_EXP_WIDTH) - 1)
bool is_infinity_ieee754 = ((biased_exp == (1u << ECMA_NUMBER_BIASED_EXP_WIDTH) - 1) && (fraction == 0));
&& (fraction == 0));
JERRY_ASSERT (is_infinity == is_infinity_ieee754);
#endif /* !JERRY_NDEBUG */
return is_infinity;
} /* ecma_number_is_infinity */ } /* ecma_number_is_infinity */
/** /**