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254 lines
8.6 KiB
254 lines
8.6 KiB
// Basic definitions of numbers
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#ifndef _CL_NUMBER_H
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#define _CL_NUMBER_H
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#include "cln/object.h"
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#include "cln/malloc.h"
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// Type hierachy:
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// Number (N) =
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// Real (R) =
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// Float (F) =
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// Short float (SF)
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// Single float (FF)
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// Double float (DF)
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// Long float (LF)
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// Rational (RA) =
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// Integer (I) =
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// Fixnum (FN)
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// Bignum (BN)
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// Ratio (RT)
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// Complex (C)
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// Constructors and assignment operators from C numeric types.
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#define CL_DEFINE_INT_CONSTRUCTOR(_class_,_type_) \
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inline _class_::_class_ (const _type_ wert) \
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{ \
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word = cl_combine(cl_FN_tag,wert); \
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}
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#define CL_DEFINE_INT_CONSTRUCTORS(_class_) \
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CL_DEFINE_INT_CONSTRUCTOR(_class_, int) \
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CL_DEFINE_INT_CONSTRUCTOR(_class_, unsigned int)
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#define CL_DEFINE_INT_ASSIGNMENT_OPERATOR(_class_,_type_) \
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inline _class_& _class_::operator= (const _type_ wert) \
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{ \
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cl_dec_refcount(*this); \
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word = cl_combine(cl_FN_tag,wert); \
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return *this; \
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}
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#define CL_DEFINE_INT_ASSIGNMENT_OPERATORS(_class_) \
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CL_DEFINE_INT_ASSIGNMENT_OPERATOR(_class_, int) \
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CL_DEFINE_INT_ASSIGNMENT_OPERATOR(_class_, unsigned int)
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#if (long_bitsize==32)
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// `long' == `sintL', `unsigned long' == `uintL'.
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#define CL_DEFINE_LONG_CONSTRUCTORS(_class_) \
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inline _class_::_class_ (const long wert) \
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{ \
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extern cl_private_thing cl_I_constructor_from_L (sint32 wert); \
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pointer = cl_I_constructor_from_L(wert); \
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} \
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inline _class_::_class_ (const unsigned long wert) \
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{ \
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extern cl_private_thing cl_I_constructor_from_UL (uint32 wert); \
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pointer = cl_I_constructor_from_UL(wert); \
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}
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#elif (long_bitsize==64)
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// `long' == `sintQ', `unsigned long' == `uintQ'.
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#define CL_DEFINE_LONG_CONSTRUCTORS(_class_) \
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inline _class_::_class_ (const long wert) \
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{ \
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extern cl_private_thing cl_I_constructor_from_Q (sint64 wert); \
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pointer = cl_I_constructor_from_Q(wert); \
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} \
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inline _class_::_class_ (const unsigned long wert) \
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{ \
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extern cl_private_thing cl_I_constructor_from_UQ (uint64 wert); \
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pointer = cl_I_constructor_from_UQ(wert); \
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}
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#endif
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#if (long_bitsize==32)
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// `long' == `sintL', `unsigned long' == `uintL'.
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#define CL_DEFINE_LONG_ASSIGNMENT_OPERATORS(_class_) \
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inline _class_& _class_::operator= (const long wert) \
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{ \
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extern cl_private_thing cl_I_constructor_from_L (sint32 wert); \
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cl_dec_refcount(*this); \
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pointer = cl_I_constructor_from_L(wert); \
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return *this; \
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} \
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inline _class_& _class_::operator= (const unsigned long wert) \
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{ \
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extern cl_private_thing cl_I_constructor_from_UL (uint32 wert); \
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cl_dec_refcount(*this); \
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pointer = cl_I_constructor_from_UL(wert); \
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return *this; \
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}
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#elif (long_bitsize==64)
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// `long' == `sintQ', `unsigned long' == `uintQ'.
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#define CL_DEFINE_LONG_ASSIGNMENT_OPERATORS(_class_) \
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inline _class_& _class_::operator= (const long wert) \
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{ \
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extern cl_private_thing cl_I_constructor_from_Q (sint64 wert); \
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cl_dec_refcount(*this); \
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pointer = cl_I_constructor_from_Q(wert); \
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return *this; \
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} \
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inline _class_& _class_::operator= (const unsigned long wert) \
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{ \
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extern cl_private_thing cl_I_constructor_from_UQ (uint64 wert); \
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cl_dec_refcount(*this); \
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pointer = cl_I_constructor_from_UQ(wert); \
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return *this; \
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}
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#endif
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namespace cln {
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// Constructors and assignment operators from C numeric types.
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// from `float':
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union ffloatjanus;
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extern cl_private_thing cl_float_to_FF_pointer (const union ffloatjanus& val);
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#define CL_DEFINE_FLOAT_CONSTRUCTOR(_class_) \
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inline _class_ :: _class_ (const float x) \
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{ \
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pointer = cl_float_to_FF_pointer(*(const union ffloatjanus *)&x); \
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} \
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inline _class_& _class_::operator= (const float x) \
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{ \
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cl_dec_refcount(*this); \
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pointer = cl_float_to_FF_pointer(*(const union ffloatjanus *)&x); \
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return *this; \
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}
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// from `double':
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union dfloatjanus;
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extern struct cl_heap_dfloat * cl_double_to_DF_pointer (const union dfloatjanus& val);
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#define CL_DEFINE_DOUBLE_CONSTRUCTOR(_class_) \
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inline _class_::_class_ (const double x) \
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{ \
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pointer = cl_double_to_DF_pointer(*(const union dfloatjanus *)&x); \
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} \
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inline _class_& _class_::operator= (const double x) \
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{ \
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cl_dec_refcount(*this); \
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pointer = cl_double_to_DF_pointer(*(const union dfloatjanus *)&x); \
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return *this; \
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}
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// Abstract class of all numbers.
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class cl_number : public cl_gcobject {
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public:
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// Default constructor. (Used for objects with no initializer.)
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cl_number ();
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// Copy constructor. (Used for function argument passing and function
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// return value, and of course for objects with initializers of the same type.)
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cl_number (const cl_number& x);
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// Converters. (Used for function argument passing and function return values.)
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// Assignment operators. (Used for assignments.)
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cl_number& operator= (const cl_number&);
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// Constructors and assignment operators from C numeric types.
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cl_number (const int); // |argument| must be < 2^29
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cl_number (const unsigned int); // argument must be < 2^29
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cl_number (const long);
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cl_number (const unsigned long);
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cl_number (const float);
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cl_number (const double);
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cl_number& operator= (const int); // |argument| must be < 2^29
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cl_number& operator= (const unsigned int); // argument must be < 2^29
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cl_number& operator= (const long);
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cl_number& operator= (const unsigned long);
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cl_number& operator= (const float);
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cl_number& operator= (const double);
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// Other constructors.
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// cl_number (const char *);
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// Private pointer manipulations.
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cl_number (cl_private_thing);
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};
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// Private constructors.
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inline cl_number::cl_number (cl_private_thing ptr) : cl_gcobject (ptr) {}
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// The assignment operators:
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CL_DEFINE_ASSIGNMENT_OPERATOR(cl_number, cl_number)
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// The default constructors.
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inline cl_number::cl_number ()
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: cl_gcobject ((cl_private_thing) cl_combine(cl_FN_tag,0)) {}
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// The copy constructors.
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CL_DEFINE_COPY_CONSTRUCTOR2(cl_number,cl_gcobject)
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// Constructors and assignment operators from C numeric types.
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CL_DEFINE_INT_CONSTRUCTORS(cl_number)
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CL_DEFINE_INT_ASSIGNMENT_OPERATORS(cl_number)
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CL_DEFINE_LONG_CONSTRUCTORS(cl_number)
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CL_DEFINE_LONG_ASSIGNMENT_OPERATORS(cl_number)
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CL_DEFINE_FLOAT_CONSTRUCTOR(cl_number)
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CL_DEFINE_DOUBLE_CONSTRUCTOR(cl_number)
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// Hack section.
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// Conversions to subtypes without checking, template version:
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// the<cl_I>(x) converts x to a cl_I, without change of representation.
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template<class type>
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inline const type& the(const cl_number& x)
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{
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// check that sizeof(type)==sizeof(cl_number)
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typedef int assertion1 [1 - 2 * (sizeof(type) != sizeof(cl_number))];
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return *(const type *) &x;
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}
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// Conversions to subtypes without checking, macro version:
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// The(cl_I)(x) converts x to a cl_I, without change of representation.
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#define The(type) *(const type *) & cl_identity
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// This inline function is for type checking purposes only.
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inline const cl_number& cl_identity (const cl_number& x) { return x; }
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} // namespace cln
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// Conversions to subtypes:
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// As(cl_I)(x) returns x as a cl_I. It first checks that x is a cl_I
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// and then returns it without change of representation.
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#if 0 // no debug information
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#define As(type) type##_As
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#define CL_DEFINE_AS_CONVERSION(_class_) \
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extern const _class_& _class_##_As (const cl_number& x); \
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inline const _class_& _class_##_As (const _class_& x) { return x; }
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#else // Line number information for ease of debugging.
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#define As(type) type##_As cl_as_aux
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#define cl_as_aux(expr) (expr,__FILE__,__LINE__)
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#define CL_DEFINE_AS_CONVERSION(_class_) \
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extern const _class_& _class_##_As (const cl_number& x, const char * filename, int line); \
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inline const _class_& _class_##_As (const _class_& x, const char * filename, int line) { (void)filename; (void)line; return x; }
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#endif
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// Mutable(type,x);
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// x should be a variable `const type x' or `const type& x'.
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// This macro introduces a new variable `type& x' whose value can be
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// modified. Useful for modifying the argument of a function which takes
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// a `const type &x'.
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// Warning: To apply this to a function's formal parameter, a block { ... }
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// must be inserted.
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#define Mutable(type,x) \
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type __copied_##x = x; \
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type& x = __copied_##x;
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// DeclareType(type,x);
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// x should be a variable of some subtype of `cl_number'. type should be
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// a subtype of `cl_number'. A new variable of the given type is declared,
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// with name x and which refers to x (by reference, with const attribute).
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#define DeclareType(type,x) \
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const type& __tmp_##x = *(const type*) &x; \
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const type& x = __tmp_##x;
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#endif /* _CL_NUMBER_H */
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