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

Namespace for decimal floating‐point types and utilities.

== Types

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdldfp/DecimalConvertUtil.adoc[`DecimalConvertUtil`] 
| This `struct` provides a namespace for utility functions that convert between the decimal floating‐point types of `bdldfp_decimal` and various other formats.
| xref:BloombergLP/bdldfp/DecimalConvertUtil_IntelDfp.adoc[`DecimalConvertUtil_IntelDfp`] 
| This `struct` provides a namespace for utility functions that convert between the decimal floating‐point types of `bdldfp_decimal` and various other formats.
| xref:BloombergLP/bdldfp/DecimalFormatConfig.adoc[`DecimalFormatConfig`] 
| This attribute class characterizes how to configure certain behavior of `bdldfp::DecimalUtil::format` functions.
| xref:BloombergLP/bdldfp/DecimalImpUtil.adoc[`DecimalImpUtil`] 
| This `struct` provides a namespace for utility functions that implement core decimal floating‐poing operations.
| xref:BloombergLP/bdldfp/DecimalImpUtil_IntelDfp.adoc[`DecimalImpUtil_IntelDfp`] 
| This `struct` provides a namespace for implementation functions that work in terms of the underlying C‐style decimal floating point implementation, Intel's DFP library.
| xref:BloombergLP/bdldfp/DecimalNumGet.adoc[`DecimalNumGet`] 
| A facet type (mechanism) used in reading decimal floating‐point types. Note that this type does not follow BDE conventions because its content is dictated by the C++ standard and native standard library implementations. See ISO/IEC TR 24733 3.10.2 for details.
| xref:BloombergLP/bdldfp/DecimalNumPut.adoc[`DecimalNumPut`] 
| A facet type (mechanism) used in writing decimal floating‐point types. Note that this type does not follow BDE conventions because its content is dictated by the C++ standard and native standard library implementations. See ISO/IEC TR 24733 3.10.3 for details.
| xref:BloombergLP/bdldfp/DecimalNumPut_WideBufferWrapper-05e.adoc[`DecimalNumPut_WideBufferWrapper`] 
| This class provides a wrapper around a buffer of the specified (template parameter) `CHARTYPE`. `CHARTYPE` shall be either plain character type `char` or wide character type `wchar_t`. The width of `wchar_t` is compiler‐specific and can be as small as 8 bits. The template parameter `WCHAR_8_BITS` shall be `true` if `wchar_t` and `char` widths are the same, i.e. 8 bits, and `false` otherwise. This class provides accessors to the beginning and the end of the buffer of `CHARTYPE` characters.
| xref:BloombergLP/bdldfp/DecimalStorage.adoc[`DecimalStorage`] 
| This `struct` provides a namespace for types for storing Binary Integral Decimal representation of a decimal floating point value.
| xref:BloombergLP/bdldfp/DecimalUtil.adoc[`DecimalUtil`] 
| This utility `struct` provides a namespace for functions using the decimal floating point types defined in the `bdldfp_decimal` package.
| xref:BloombergLP/bdldfp/DecimalUtil_CStringUtil.adoc[`DecimalUtil_CStringUtil`] 
| This component‐private utility `struct` provides a namespace for the `flatten` overload set intended to be used in concert with an overload set consisting of a function template with a deduced argument and an non‐template overload accepting a `const char *`. The actual implementation of the functionality would be in the `const char *` overload whereas the purpose of the function template is to invoke the `const char *` overload with a null‐terminated string.
| xref:BloombergLP/bdldfp/Decimal_BslFmtFormatterImpl.adoc[`Decimal_BslFmtFormatterImpl`] 
| This class template provides the implementation for all possible decimal floating point formatting styles and the parsing of the format specification. The specified `t_VALUE` template type argument determines the type of decimal floating point value use, while the specified `t_CHAR` determines both the formatting string and the output's character type. The behavior is undefined unless `t_VALUE` is one of `Decimal32`, `Decimal64, or `Decimal128, and `t_CHAR` is on of `char` or `wchar_t`.
| xref:BloombergLP/bdldfp/Decimal_FormatterSpecification.adoc[`Decimal_FormatterSpecification`] 
| This template is the implementation of the `bsl::format` specification for `bdldfp::Decimal*` types. It parses as well as postprocesses format specifications for `bdldfp::Decimal*` type formatted arguments, as well as stores the results of that pasring: the specification.
| xref:BloombergLP/bdldfp/Decimal_StandardNamespaceCanary.adoc[`Decimal_StandardNamespaceCanary`] 
| An empty class used for error detection when looking for the original name of the standard namespace. Do not use it.
| xref:BloombergLP/bdldfp/Decimal_Type128.adoc[`Decimal_Type128`] 
| This value‐semantic class implements the IEEE‐754 128 bit decimal floating‐point format arithmetic type. This class is a standard layout type that is `const` thread‐safe and exception‐neutral.
| xref:BloombergLP/bdldfp/Decimal_Type32.adoc[`Decimal_Type32`] 
| These are the actual (decimal floating‐point) types being implemented. They use a different name to cause an error if the official types are forward declared: The exact definition of the decimal types is left unspecified so that that can potentially be aliases for built‐in types.
| xref:BloombergLP/bdldfp/Decimal_Type64.adoc[`Decimal_Type64`] 
| This value‐semantic class implements the IEEE‐754 64 bit decimal floating‐point format arithmetic type. This class is a standard layout type that is `const` thread‐safe and exception‐neutral.
| xref:BloombergLP/bdldfp/Uint128.adoc[`Uint128`] 
| This value‐semantic type represents a 128‐bit integer, with host machine byte order.
| xref:BloombergLP/bdldfp/faux_numeric_limits-01.adoc[`faux_numeric_limits`] 
| This class is used as a base‐class for manifest constants in the `std::numeric_limits` specializations to overcome a Sun compiler issue.
|===


== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdldfp/Decimal128.adoc[`Decimal128`] 
| The decimal floating‐point types are typedefs to the unspecified implementation types.
| xref:BloombergLP/bdldfp/Decimal32.adoc[`Decimal32`] 
| The decimal floating‐point types are typedefs to the unspecified implementation types.
| xref:BloombergLP/bdldfp/Decimal64.adoc[`Decimal64`] 
| Alias for the 64‐bit decimal floating‐point type.
|===


== Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdldfp/hashAppend-0be.adoc[`hashAppend`] 
| `hashAppend` overloads
| xref:BloombergLP/bdldfp/operator_d128-0d.adoc[`operator""_d128`] 
| `operator""_d128` overloads
| xref:BloombergLP/bdldfp/operator_d32-0d.adoc[`operator""_d32`] 
| `operator""_d32` overloads
| xref:BloombergLP/bdldfp/operator_d64-0b.adoc[`operator""_d64`] 
| `operator""_d64` overloads
| xref:BloombergLP/bdldfp/operator_bitand.adoc[`operator&`] 
| Return an Uint128 object having the value of a the bitwise and between the specified `lhs` and the specified `rhs` value.
| xref:BloombergLP/bdldfp/operator_star-092.adoc[`operator*`] 
| Multiplication operators
| xref:BloombergLP/bdldfp/operator_plus-08c.adoc[`operator+`] 
| Unary plus operators
| xref:BloombergLP/bdldfp/operator_inc-03.adoc[`operator++`] 
| Increment operators
| xref:BloombergLP/bdldfp/operator_minus-0f2.adoc[`operator‐`] 
| Unary minus operators
| xref:BloombergLP/bdldfp/operator_dec-056.adoc[`operator‐‐`] 
| Decrement operators
| xref:BloombergLP/bdldfp/operator_slash-033f.adoc[`operator/`] 
| Division operators
| xref:BloombergLP/bdldfp/operator_rshift-0e.adoc[`operator>>`] 
| Right shift operators
| xref:BloombergLP/bdldfp/operator_xor.adoc[`operatorˆ`] 
| Return an Uint128 object having the value of a the bitwise xor between the specified `lhs` and the specified `rhs` value.
| xref:BloombergLP/bdldfp/operator_bitor.adoc[`operator|`] 
| Return an Uint128 object having the value of a the bitwise or between the specified `lhs` and the specified `rhs` value.
| xref:BloombergLP/bdldfp/operator_bitnot.adoc[`operator~`] 
| Return an `Uint128` value equal to the bitwise ones compliment of the specified `value`.
| xref:BloombergLP/bdldfp/operator_lshift-07.adoc[`operator<<`] 
| Left shift operators
| xref:BloombergLP/bdldfp/operator_eq-0b6.adoc[`operator==`] 
| Equality operators
| xref:BloombergLP/bdldfp/operator_not_eq-0d.adoc[`operator!=`] 
| Inequality operators
| xref:BloombergLP/bdldfp/operator_lt-08.adoc[`operator<`] 
| Less‐than operators
| xref:BloombergLP/bdldfp/operator_le-008.adoc[`operator<=`] 
| Less‐than‐or‐equal operators
| xref:BloombergLP/bdldfp/operator_gt-00.adoc[`operator>`] 
| Greater‐than operators
| xref:BloombergLP/bdldfp/operator_ge-0d.adoc[`operator>=`] 
| Greater‐than‐or‐equal operators
|===



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