Run results for: If statements vs zero multiplication and assignment

Is it faster to check if a numeric calculation needs to be performed and assigned to an object property, or just do the calculation against zero and assign it anyway.

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Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:130.0) Gecko/20100101 Firefox/130.0

Browser: Firefox 130

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

If Statement - False

546.0M/s

Calculate - Positive

262.3M/s

Calculate - Zero

239.1M/s

If Statement - True

230.9M/s

View exact numbers

Test name	Executions per second
✓ If Statement - False	546,042,496 Ops/sec
Calculate - Positive	262,291,968 Ops/sec
Calculate - Zero	239,104,240 Ops/sec
If Statement - True	230,921,392 Ops/sec

Script Preparation code:

var DO_MATHS_TRUE = true,
    DO_MATHS_FALSE = false,
    DELTA = 12345,
    OBJ_SRC = {x: 12},
    OBJ_SRC_ZERO = {x: 0},
    OBJ_DEST = {x: 0};

Tests:

If Statement - True
if(DO_MATHS_TRUE){ OBJ_DEST.x += (OBJ_SRC.x * DELTA) }
If Statement - False
if(DO_MATHS_FALSE){ OBJ_DEST.x += (OBJ_SRC.x * DELTA) }
Calculate - Positive
OBJ_DEST.x += (OBJ_SRC.x * DELTA)
Calculate - Zero
OBJ_DEST.x += (OBJ_SRC_ZERO.x * DELTA)