# Disable promotion from Float64 to BigFloat

**URL:** <https://discourse.julialang.org/t/disable-promotion-from-float64-to-bigfloat/129529>\
**Category:** General Usage\
**Created:** [June 1, 2025, 2:27pm UTC](https://discourse.julialang.org/t/disable-promotion-from-float64-to-bigfloat/129529 "2025-06-01T14:27:24Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![GunnarFarneback](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/gunnarfarneback/32/1827_2.png) [@GunnarFarneback](https://discourse.julialang.org/u/GunnarFarneback)\
**Post date:** [June 2, 2025, 5:28pm UTC](https://discourse.julialang.org/t/disable-promotion-from-float64-to-bigfloat/129529/21 "2025-06-02T17:28:26Z")

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While all of this is correct, for _debugging_ purposes it’s perfectly fine to make a dirty redefinition of a constructor if that helps you pin down mistakes in your code.

[Previous page](https://discourse.julialang.org/t/disable-promotion-from-float64-to-bigfloat/129529.md?page=1)