> Math.pow(2, 1024) Infinity > Math.pow(2, 1023) 8.98846567431158e+307What is going on here?
1.f × 2pThis is the most common way of representing floating point numbers. The left-hand side of the multiplication comprises the digits, the right-hand side moves the dot to the correct position (to the left if it is negative, to the right if it is positive).
The mantissa is a binary 1, followed by a binary dot, followed by a 52 bit fraction f. The 11 bit exponent p has to be in the range
−1023 < p < 1024Thus, the exponent of Math.pow(2, 1024) is out of range and Infinity is an error result.