float

Why do double floating point operations lose precision?

1. What is a floating point number? A floating point number is a type of data used by computers to represent decimals, using scientific notation. In java, double is a double-precision, 64-bit, floating-point number, and the default is 0.0d. float is a single-precision, 32-bit floating-point numbers, default is 0.0f. Storing in memory float sign bit (1 bit) exponent (8 bit) mantissa (23 bit) double sign bit (1 bit) exponent (11 bit) mantissa (52 bit)