[#BloombergLP-bdldfp-DecimalImpUtil-add-0a]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdldfp.adoc[bdldfp]::xref:BloombergLP/bdldfp/DecimalImpUtil.adoc[DecimalImpUtil]::add
:relfileprefix: ../../../
:mrdocs:

Add the value of the specified `rhs` to the value of the specified `lhs` as described by IEEE‐754 and return the result.

== Synopsis

Declared in `<bdldfp_decimalimputil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
xref:BloombergLP/bdldfp/DecimalImpUtil/ValueType32.adoc[DecimalImpUtil::ValueType32]
add(
    xref:BloombergLP/bdldfp/DecimalImpUtil/ValueType32.adoc[ValueType32] lhs,
    xref:BloombergLP/bdldfp/DecimalImpUtil/ValueType32.adoc[ValueType32] rhs);
----

== Description

* If either of `lhs` or `rhs` is signaling NaN, then store the value of the macro `EDOM` into `errno` and return a NaN. * Otherwise if either of `lhs` or `rhs` is NaN, return a NaN. * Otherwise if `lhs` and `rhs` are infinities of differing signs, store the value of the macro `EDOM` into `errno` and return a NaN. * Otherwise if `lhs` and `rhs` are infinities of the same sign then return infinity of that sign. * Otherwise if `rhs` is zero (positive or negative), return `lhs`. * Otherwise if the sum of `lhs` and `rhs` has an absolute value that is larger than the maximum value supported by the indicated result type then store the value of the macro `ERANGE` into `errno` and return infinity with the same sign as that result. * Otherwise return the sum of the number represented by `lhs` and the number represented by `rhs`. Return the sum of the specified decimal values.


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