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