82 lines
3.0 KiB
C
82 lines
3.0 KiB
C
/// \file cmFloatTypes.h
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/// \brief Declare the types cmReal_t and cmSample_t and define some useful limits.
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///
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/// For signal processing functions the cm library uses the types cmSample_t to indicate an audio
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/// sample value and cmReal_t to specify a general purpose floating point value. The library
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/// is designed in such a way that the actual type, float or double, for these two types may
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/// be set at compilation time. Set the preprocessor variable CM_FLOAT_SMP to 1 to indicate
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/// that cmSample_t will be of type 'float' otherwise it will be of type 'double'.
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/// Set the preprocessor variable CM_FLOAT_REAL to 1 to indicate
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/// that cmSample_t will be of type 'float' otherwise it will be of type 'double'.
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/// By default cmSample_t is float nad cmReal_t is double.
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///
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#ifndef cmFloatTypes_h
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#define cmFloatTypes_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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//-----------------------------------------------------------------
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#ifndef CM_FLOAT_SMP
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#define CM_FLOAT_SMP 1
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#endif
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#if CM_FLOAT_SMP == 1
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typedef float cmSample_t; ///< cmSample_t is a float
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typedef float _Complex cmComplexS_t;///< cmComplexS_t is single precision.
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#define cmSample_EPSILON FLT_EPSILON ///< Minimum increment between 1.0 and the next greaterv value. (1E-5)
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#define cmSample_MAX FLT_MAX ///< Maximum representable number (1E+37).
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#define cmSample_MIN FLT_MIN ///< Minimum representable number (1E-37).
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#else
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typedef double cmSample_t; ///< cmSample_t is a double
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typedef double _Complex cmComplexS_t; ///< cmComplexS_t is doulbe precision.
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#define cmSample_EPSILON DBL_EPSILON ///< Minimum increment between 1.0 and the next greaterv value. (1E-9)
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#define cmSample_MAX DBL_MAX ///< Maximum representable number (1E+37).
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#define cmSample_MIN DBL_MIN ///< Minimum representable number (1E-37).
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#endif
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//-----------------------------------------------------------------
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//-----------------------------------------------------------------
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//-----------------------------------------------------------------
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#ifndef CM_FLOAT_REAL
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#define CM_FLOAT_REAL 0
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#endif
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#if CM_FLOAT_REAL == 1
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typedef float cmReal_t; ///< cmReal_t is a float
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typedef float _Complex cmComplexR_t; ///< cmComplexR_t is single precision.
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#define cmReal_EPSILON FLT_EPSILON ///< Minimum increment between 1.0 and the next greaterv value. (1E-5)
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#define cmReal_MAX FLT_MAX ///< Maximum representable number (1E+37).
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#define cmReal_MIN FLT_MIN ///< Minimum representable number (1E-37).
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#else
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typedef double cmReal_t; ///< cmReal_t is a double.
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typedef double _Complex cmComplexR_t; ///< cmComplexR_t is double precision.
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#define cmReal_EPSILON DBL_EPSILON ///< Minimum increment between 1.0 and the next greaterv value (1E-9).
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#define cmReal_MAX DBL_MAX ///< Maximum representable number (1E+37).
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#define cmReal_MIN DBL_MIN ///< Minimum representable number (1E-37).
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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