BloombergLP::bdldfp::DecimalImpUtil::round

Return the integral value nearest to the specified x. Round halfway cases away from zero, regardless of the current decimal floating point rounding mode.

Synopsis

Declared in <bdldfp_decimalimputil.h>

static
DecimalImpUtil::ValueType32
round(ValueType32 x);

Description

Special value handling: * if x is quiet NaN, quiet NaN is returned. * If x is signaling NaN, quiet NaN is returned and the value of the macro EDOM is stored into errno. * if x is +/‐infinity or +/‐0, it is returned unmodified.

Examples: round(0.5) ==> 1.0; round(‐0.5) ==> ‐1.0

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