## Synonyms of mantissa

### Definition of mantissa

**noun**

the part of a floating-point number that represents the significant digits of that number, and that is multiplied by the base raised to the exponent to give the actual value of the number.

Double-precision fixed-point would employ two times 24, or a 48-bit word length; double-precision floating-point would use a two times 32, or 64-bit mantissa .

the part of a logarithm that follows the decimal point.

Sharp and completely accurate visions of hexadecimal mantissas and binary fractions floated about my head, along with the sure and certain knowledge of how to convert them to something more useful.

### Example of mantissa

By choosing appropriate **mantissas** and exponents, we can increase the resolution at shallower depths and degrade it at greater depths.

Double-precision fixed-point would employ two times 24, or a 48-bit word length; double-precision floating-point would use a two times 32, or 64-bit **mantissa** .

If you recall, run-of-the-mill DSPs typically store numbers as a floating-point, 24-bit **mantissa** and an 8-bit exponent.

In these cases, the 24-bit fixed standard is equivalent to the 24-bit **mantissa** , plus 8-bit exponent used in the 32-bit, floating-point version.

Sharp and completely accurate visions of hexadecimal **mantissas** and binary fractions floated about my head, along with the sure and certain knowledge of how to convert them to something more useful.

The **mantissa** provides the significant information, or digits, and the exponent provides a scaling factor that shows how big the number is.