# Minimum Subnormal Base 10 Exponent > The minimum base 10 exponent for a subnormal [double-precision floating-point number][ieee754].

## Usage ```javascript var FLOAT64_MIN_BASE10_EXPONENT_SUBNORMAL = require( '@stdlib/constants/float64/min-base10-exponent-subnormal' ); ``` #### FLOAT64_MIN_BASE10_EXPONENT_SUBNORMAL The minimum base 10 exponent for a subnormal [double-precision floating-point number][ieee754]. ```javascript var bool = ( FLOAT64_MIN_BASE10_EXPONENT_SUBNORMAL === -324 ); // returns true ```

## Examples ```javascript var FLOAT64_MIN_BASE10_EXPONENT_SUBNORMAL = require( '@stdlib/constants/float64/min-base10-exponent-subnormal' ); console.log( FLOAT64_MIN_BASE10_EXPONENT_SUBNORMAL ); // => -324 ```

[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-1985