[#FeeFrac-Div]
= xref:FeeFrac.adoc[FeeFrac]::Div
:relfileprefix: ../
:mrdocs:

Helper function for 96/32 signed division, rounding towards negative infinity (if round_down), or towards positive infinity (if !round_down). This is a version relying on __int128.

== Synopsis

Declared in `<util/feefrac.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
int64_t
Div(
    __int128 n,
    int32_t d,
    bool round_down) noexcept;
----

== Description

The result must fit in an int64_t, and d must be strictly positive.

== Return Value

The quotient, rounded as requested.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *n*
| The 128‐bit signed dividend.
| *d*
| The strictly positive 32‐bit divisor.
| *round_down*
| Whether to round towards negative infinity (true) or positive infinity (false).
|===


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