> Multiplying by 1.5 has the advantage that 1 + 1.5 > 1.5 * 1.5, so the second time you realloc it fits into the old memory (which can help reduce memory fragme

> Multiplying by 1.5 has the advantage that 1 + 1.5 > 1.5 * 1.5, so the second time you realloc it fits into the old memory (which can help reduce memory fragmentation if the allocator takes advantage of it). I’m really struggling to think of any mainstream allocator that can take advantage of this.