[#BloombergLP-bdldfp-DecimalImpUtil-fma-08]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdldfp.adoc[bdldfp]::xref:BloombergLP/bdldfp/DecimalImpUtil.adoc[DecimalImpUtil]::fma
:relfileprefix: ../../../
:mrdocs:

Return, using the specified `x`, `y`, and `z`, the value of the expression `x * y + z`, rounded as one ternary operation according to the current decimal floating point rounding mode.

== Synopsis

Declared in `<bdldfp_decimalimputil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
xref:BloombergLP/bdldfp/DecimalImpUtil/ValueType32.adoc[DecimalImpUtil::ValueType32]
fma(
    xref:BloombergLP/bdldfp/DecimalImpUtil/ValueType32.adoc[ValueType32] x,
    xref:BloombergLP/bdldfp/DecimalImpUtil/ValueType32.adoc[ValueType32] y,
    xref:BloombergLP/bdldfp/DecimalImpUtil/ValueType32.adoc[ValueType32] z);
----

== Description

Special value handling: * If `x` or `y` are quiet NaN, quiet NaN is returned. * If any argument is signaling NaN, quiet NaN is returned and the value of the macro `EDOM` is stored into `errno`. * If `x*y` is an exact infinity and `z` is infinity with the opposite sign, quiet NaN is returned and the value of the macro `EDOM` is stored into `errno`. * If `x` is zero and `y` is infinite or if `x` is infinite and `y` is zero, and `z` is not a NaN, then quiet NaN is returned and the value of the macro `EDOM` is stored into `errno`. * If `x` is zero and `y` is infinite or if `x` is infinite and `y` is zero, and `z` is NaN, then quiet NaN is returned.


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