[#BloombergLP-bslfmt-PadUtil-computePadding]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslfmt.adoc[bslfmt]::xref:BloombergLP/bslfmt/PadUtil.adoc[PadUtil]::computePadding
:relfileprefix: ../../../
:mrdocs:

Compute the left and right padding values needed to format content with the specified `contentWidth` within a field of the width specified by `widthValue` using the specified `alignment`. If `Enums::e_ALIGN_DEFAULT` is passed to `alignment`, use the specified `defaultAlign` instead. Load the computed padding values into the specified `leftPadding` and `rightPadding`. If the category of `widthValue` is not `e_VALUE` or if the value indicated by `widthValue` is less than `contentWidth`, the padding is zero. The behavior is undefined if `contentWidth` specifies a negative width, or if `defaultAlign` specifies `e_ALIGN_DEFAULT`.

== Synopsis

Declared in `<bslfmt_padutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
void
computePadding(
    std::ptrdiff_t* leftPadding,
    std::ptrdiff_t* rightPadding,
    xref:BloombergLP/bslfmt/PadUtil/NumericValue.adoc[NumericValue] const& widthValue,
    std::ptrdiff_t contentWidth,
    xref:BloombergLP/bslfmt/PadUtil/Alignment.adoc[Alignment] alignment,
    xref:BloombergLP/bslfmt/PadUtil/Alignment.adoc[Alignment] defaultAlign = Enums::e_ALIGN_LEFT);
----


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