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- [section:config_macros Configuration Macros]
- Almost all configuration details are set up automatically by
- `<boost\math\tools\config.hpp>`.
- In normal use, only policy configuration macros are likely to be used. See __policy_ref.
- For reference, information on Boost.Math macros used internally are described briefly below.
- [table Boost.Math Macros
- [[MACRO][Notes]]
- [[`BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS`] [Do not produce or use long double functions: this macro gets set when the platform's
- long double or standard library long double support is absent or buggy.]]
- [[`BOOST_MATH_USE_FLOAT128`][When set the numeric constants support the `__float128` data type with constants having the `Q` suffix.]]
- [[`BOOST_MATH_DISABLE_FLOAT128`][When set the numeric constants do not use the `__float128` data type even if the compiler appears to support it.]]
- [[`BOOST_MATH_NO_REAL_CONCEPT_TESTS`] [Do not try to use real concept tests (hardware or software does not support real_concept type).]]
- [[`BOOST_MATH_CONTROL_FP`] [Controls FP hardware exceptions - our tests don't support hardware exceptions on MSVC.
- May get set to something like: ` _control87(MCW_EM,MCW_EM)`.]]
- [[`BOOST_MATH_NO_DEDUCED_FUNCTION_POINTERS`] [This macro is used by our test cases, it is set when an assignment of a function template
- to a function pointer requires explicit template arguments to be provided on the function name.]]
- [[`BOOST_MATH_USE_C99` ] [Use C99 math functions.]]
- [[`BOOST_NO_NATIVE_LONG_DOUBLE_FP_CLASSIFY`] [define if no native (or buggy) `fpclassify(long double)`
- even though the other C99 functions are present.]]
- [[`BOOST_MATH_SMALL_CONSTANT(x)`] [Helper macro used in our test cases to set underflowing constants set to zero
- if this would cause compiler issues.]]
- [[`BOOST_MATH_BUGGY_LARGE_FLOAT_CONSTANTS`] [Set if constants too large for a float, will cause "bad" values to be stored in the data,
- rather than infinity or a suitably large value.]]
- [[`BOOST_MATH_STD_USING`] [Provides `using` statements for many std:: (abs to sqrt) and boost::math (rounds, modf) functions.
- This allows these functions to be called unqualified so that if
- [@http://en.wikipedia.org/wiki/Argument-dependent_name_lookup argument-dependent Argument Dependent Lookup]
- fails to find a suitable overload, then the std:: versions will also be considered.]]
- [[`BOOST_FPU_EXCEPTION_GUARD`] [Used at the entrypoint to each special function to reset all FPU exception flags prior
- to internal calculations, and then merge the old and new exception flags on function exit. Used as a workaround
- on platforms or hardware that behave strangely if any FPU exception flags are set when calling standard library
- functions.]]
- [[`BOOST_MATH_INSTRUMENT`] [Define to output diagnostics for math functions. This is rather 'global' to Boost.Math and so
- coarse-grained that it will probably produce copious output! (Especially because full precision values are output).
- Designed primarily for internal use and development.]]
- [[`BOOST_MATH_INSTRUMENT_CODE(x)`] [Output selected named variable, for example `BOOST_MATH_INSTRUMENT_CODE("guess = " << guess)`; Used by `BOOST_MATH_INSTRUMENT`]]
- [[`BOOST_MATH_INSTRUMENT_VARIABLE(name)`] [Output selected variable, for example `BOOST_MATH_INSTRUMENT_VARIABLE(result);` Used by `BOOST_MATH_INSTRUMENT`]]
- [[`BOOST_MATH_INSTRUMENT_FPU`] [Output the state of the FPU's control flags.]]
- ] [/table]
- [table Boost.Math Tuning
- [[ Macros for Tuning performance options for specific compilers] [Notes]]
- [[`BOOST_MATH_POLY_METHOD`] [See the [link math_toolkit.tuning performance tuning section].]]
- [[`BOOST_MATH_RATIONAL_METHOD`] [See the [link math_toolkit.tuning performance tuning section].]]
- [[`BOOST_MATH_MAX_POLY_ORDER`] [See the [link math_toolkit.tuning performance tuning section].]]
- [[`BOOST_MATH_INT_TABLE_TYPE`] [See the [link math_toolkit.tuning performance tuning section].]]
- [[`BOOST_MATH_INT_VALUE_SUFFIX`] [Helper macro for appending the correct suffix to integer constants
- which may actually be stored as reals depending on the value of BOOST_MATH_INT_TABLE_TYPE.]]
- ] [/table]
- [endsect] [/section:config_macros Configuration Macros]
- [/
- Copyright 2010 John Maddock and Paul A. Bristow.
- Distributed under the Boost Software License, Version 1.0.
- (See accompanying file LICENSE_1_0.txt or copy at
- http://www.boost.org/LICENSE_1_0.txt).
- ]
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