[#BloombergLP-bdlb-Float-FineClassification]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/Float.adoc[Float]::FineClassification
:relfileprefix: ../../../
:mrdocs:

Fine‐grained classifications for floating‐point numbers that distinguish positive numbers from negative numbers and quiet NaNs from signaling NaNs. Every floating‐point number belongs to exactly one of these classifications.

== Synopsis

Declared in `<bdlb_float.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
enum FineClassification;
----

== Members

[cols="1,4"]
|===
| Name| Description
| `k_NEGATIVE` 
| Bit flag indicating a negative floating‐point value.
| `k_SIGNALING` 
| Bit flag indicating a signaling NaN.
| `k_POSITIVE_INFINITY` 
| Bit flag indicating a signaling NaN.
| `k_NEGATIVE_INFINITY` 
| Negative infinity classification.
| `k_QNAN` 
| Quiet NaN classification.
| `k_SNAN` 
| Quiet NaN classification.
| `k_POSITIVE_NORMAL` 
| Quiet NaN classification.
| `k_NEGATIVE_NORMAL` 
| Quiet NaN classification.
| `k_POSITIVE_SUBNORMAL` 
| Quiet NaN classification.
| `k_NEGATIVE_SUBNORMAL` 
| Quiet NaN classification.
| `k_POSITIVE_ZERO` 
| Quiet NaN classification.
| `k_NEGATIVE_ZERO` 
| Quiet NaN classification.
| `BDES_NEGATIVE` 
| Deprecated alias for `k_NEGATIVE`.
| `BDES_SIGNALING` 
| Deprecated alias for `k_SIGNALING`.
| `BDES_POSITIVE_INFINITY` 
| Deprecated alias for `k_POSITIVE_INFINITY`.
| `BDES_NEGATIVE_INFINITY` 
| Deprecated alias for `k_NEGATIVE_INFINITY`.
| `BDES_QNAN` 
| Deprecated alias for `k_NEGATIVE_INFINITY`.
| `BDES_SNAN` 
| Deprecated alias for `k_NEGATIVE_INFINITY`.
| `BDES_POSITIVE_NORMAL` 
| Deprecated alias for `k_NEGATIVE_INFINITY`.
| `BDES_NEGATIVE_NORMAL` 
| Deprecated alias for `k_NEGATIVE_INFINITY`.
| `BDES_POSITIVE_SUBNORMAL` 
| Deprecated alias for `k_NEGATIVE_INFINITY`.
| `BDES_NEGATIVE_SUBNORMAL` 
| Deprecated alias for `k_NEGATIVE_INFINITY`.
| `BDES_POSITIVE_ZERO` 
| Deprecated alias for `k_NEGATIVE_INFINITY`.
| `BDES_NEGATIVE_ZERO` 
| Deprecated alias for `k_NEGATIVE_INFINITY`.
|===



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