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Fix Math.trunc(x) if -1 < x < 0 (#3445)

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Math.trunc(x) should be -0.0 if -1 < x < 0 (ES2015 20.2.2.35). The problem
was that -0 isn't -0.0, but +0.0 in C. There were a test case for it, but
it was incorrect, because +0.0 === -0.0 in JS.

JerryScript-DCO-1.0-Signed-off-by: Csaba Osztrogonác oszi@inf.u-szeged.hu
This commit is contained in:
Csaba Osztrogonác
2019-12-12 10:57:44 +01:00
committed by Dániel Bátyai
parent df6995d0f6
commit fb4b18a515
2 changed files with 11 additions and 6 deletions
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jerry-core/ecma/builtin-objects/ecma-builtin-math.c
+2 -2
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@@ -177,12 +177,12 @@ ecma_builtin_math_object_trunc (ecma_number_t arg)
if ((arg > 0) && (arg < 1))
{
return (ecma_number_t) 0;
return (ecma_number_t) 0.0;
}
if ((arg < 0) && (arg > -1))
{
return (ecma_number_t) -0;
return (ecma_number_t) -0.0;
}
return (ecma_number_t) arg - fmod (arg, 1);