Return the largest integral value that is not greater than the specified x.

Synopsis

Declared in <bdldfp_decimalutil.h>

static
Decimal32
floor(Decimal32 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: floor(0.5) ==> 0.0; floor(‐0.5) ==> ‐1.0

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