# FLOAT64_MIN_BASE2_EXPONENT_SUBNORMAL > The minimum biased base 2 exponent for a subnormal [double-precision floating-point number][ieee754].

## Usage ```javascript var FLOAT64_MIN_BASE2_EXPONENT_SUBNORMAL = require( '@stdlib/constants/float64/min-base2-exponent-subnormal' ); ``` #### FLOAT64_MIN_BASE2_EXPONENT_SUBNORMAL The minimum biased base 2 exponent for a subnormal [double-precision floating-point number][ieee754]. ```javascript var bool = ( FLOAT64_MIN_BASE2_EXPONENT_SUBNORMAL === -1074 ); // returns true ```

## Examples ```javascript var FLOAT64_MIN_BASE2_EXPONENT_SUBNORMAL = require( '@stdlib/constants/float64/min-base2-exponent-subnormal' ); console.log( FLOAT64_MIN_BASE2_EXPONENT_SUBNORMAL ); // => -1074 ```

* * *

## C APIs

### Usage ```c #include "stdlib/constants/float64/min_base2_exponent_subnormal.h" ``` #### STDLIB_CONSTANT_FLOAT64_MIN_BASE2_EXPONENT_SUBNORMAL Macro for the minimum biased base 2 exponent for a subnormal [double-precision floating-point number][ieee754].

* * * ## See Also - [`@stdlib/constants/float64/max-base2-exponent-subnormal`][@stdlib/constants/float64/max-base2-exponent-subnormal]: the maximum biased base 2 exponent for a subnormal double-precision floating-point number. - [`@stdlib/constants/float64/min-base10-exponent-subnormal`][@stdlib/constants/float64/min-base10-exponent-subnormal]: the minimum base 10 exponent for a subnormal double-precision floating-point number. - [`@stdlib/constants/float64/min-base2-exponent`][@stdlib/constants/float64/min-base2-exponent]: the minimum biased base 2 exponent for a normal double-precision floating-point number.

[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-1985 [@stdlib/constants/float64/max-base2-exponent-subnormal]: https://github.com/stdlib-js/constants/tree/main/float64/max-base2-exponent-subnormal [@stdlib/constants/float64/min-base10-exponent-subnormal]: https://github.com/stdlib-js/constants/tree/main/float64/min-base10-exponent-subnormal [@stdlib/constants/float64/min-base2-exponent]: https://github.com/stdlib-js/constants/tree/main/float64/min-base2-exponent