In Defense of 'Mantissa'
3 months ago
- #terminology
- #mathematics
- #floating-point
- The term 'mantissa' originated from logarithm tables, representing the fractional part of a logarithm.
- In floating-point numbers, 'mantissa' refers to the fractional part of the logarithm of the number, maintaining its original mathematical meaning.
- The term 'significand' has become more conventional, despite being less accurate and more confusing due to its similarity to 'sign bit'.
- Arguments against 'mantissa' claim it's mathematically incorrect, but it accurately represents the fractional part in both logarithms and floating-point numbers.
- Alternative terms like 'coefficient' and 'fraction' exist, but 'mantissa' has historical and mathematical accuracy on its side.
- Despite its advantages, 'mantissa' is now considered nonstandard, largely due to authorities favoring 'significand'.