[1] | 1 | /*------------------------------------------------------------\ |
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| 2 | | | |
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| 3 | | Tool : systemcass | |
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| 4 | | | |
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| 5 | | File : sc_bigint.h | |
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| 6 | | | |
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| 7 | | Author : Buchmann Richard | |
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| 8 | | | |
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| 9 | | Date : 09_07_2004 | |
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| 10 | | | |
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| 11 | \------------------------------------------------------------*/ |
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| 12 | #ifndef __SC_BIGINT_H__ |
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| 13 | #define __SC_BIGINT_H__ |
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| 14 | |
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| 15 | #include <sc_bit.h> |
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| 16 | #include <sc_logic.h> |
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| 17 | #include <sc_bv.h> |
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| 18 | |
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| 19 | // ---------------------------------------------------------------------------- |
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| 20 | // CLASS : sc_bigint<W> |
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| 21 | // |
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| 22 | // ---------------------------------------------------------------------------- |
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| 23 | |
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[8] | 24 | #include "sc_nbdefs.h" |
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[1] | 25 | |
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| 26 | namespace sc_dt { |
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| 27 | |
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| 28 | // |
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| 29 | #define MASK32(W) ((~ (const uint32)0) >> (sizeof (uint32) * 8 - W)) |
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| 30 | #define MASK64(W) ((~ (const uint64)0) >> (sizeof (uint64) * 8 - W)) |
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| 31 | // |
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| 32 | |
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| 33 | template<int W> struct s_bigint_type { typedef uint64 uint_type;}; |
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| 34 | #define DECLAR_BIGINT_TYPE(W) template<> struct s_bigint_type<W> { typedef uint16 uint_type; }// not declared as uint16 because << operator threats like a character |
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| 35 | DECLAR_BIGINT_TYPE( 1); |
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| 36 | DECLAR_BIGINT_TYPE( 2); |
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| 37 | DECLAR_BIGINT_TYPE( 3); |
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| 38 | DECLAR_BIGINT_TYPE( 4); |
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| 39 | DECLAR_BIGINT_TYPE( 5); |
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| 40 | DECLAR_BIGINT_TYPE( 6); |
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| 41 | DECLAR_BIGINT_TYPE( 7); |
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| 42 | DECLAR_BIGINT_TYPE( 8); |
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| 43 | #undef DECLAR_BIGINT_TYPE |
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| 44 | #define DECLAR_BIGINT_TYPE(W) template<> struct s_bigint_type<W> { typedef uint16 uint_type; } |
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| 45 | DECLAR_BIGINT_TYPE( 9); |
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| 46 | DECLAR_BIGINT_TYPE(10); |
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| 47 | DECLAR_BIGINT_TYPE(11); |
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| 48 | DECLAR_BIGINT_TYPE(12); |
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| 49 | DECLAR_BIGINT_TYPE(13); |
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| 50 | DECLAR_BIGINT_TYPE(14); |
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| 51 | DECLAR_BIGINT_TYPE(15); |
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| 52 | DECLAR_BIGINT_TYPE(16); |
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| 53 | #undef DECLAR_BIGINT_TYPE |
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| 54 | #define DECLAR_BIGINT_TYPE(W) template<> struct s_bigint_type<W> { typedef uint32 uint_type; } |
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| 55 | DECLAR_BIGINT_TYPE(17); |
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| 56 | DECLAR_BIGINT_TYPE(18); |
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| 57 | DECLAR_BIGINT_TYPE(19); |
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| 58 | DECLAR_BIGINT_TYPE(20); |
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| 59 | DECLAR_BIGINT_TYPE(21); |
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| 60 | DECLAR_BIGINT_TYPE(22); |
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| 61 | DECLAR_BIGINT_TYPE(23); |
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| 62 | DECLAR_BIGINT_TYPE(24); |
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| 63 | DECLAR_BIGINT_TYPE(25); |
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| 64 | DECLAR_BIGINT_TYPE(26); |
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| 65 | DECLAR_BIGINT_TYPE(27); |
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| 66 | DECLAR_BIGINT_TYPE(28); |
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| 67 | DECLAR_BIGINT_TYPE(29); |
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| 68 | DECLAR_BIGINT_TYPE(30); |
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| 69 | DECLAR_BIGINT_TYPE(31); |
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| 70 | DECLAR_BIGINT_TYPE(32); |
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| 71 | #undef DECLAR_BIGINT_TYPE |
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| 72 | |
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| 73 | template< int W /* = SC_INTWIDTH */> |
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| 74 | class sc_bigint |
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| 75 | { |
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| 76 | typedef sc_bigint<W> this_type; |
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| 77 | typedef typename s_int_type<W>::int_type data_type; |
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| 78 | |
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| 79 | typedef data_type sc_uint_subref; |
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| 80 | typedef data_type sc_uint_subref_r; |
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| 81 | |
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| 82 | union { |
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| 83 | data_type valW:W; |
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| 84 | bool valB[W]; |
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| 85 | data_type val; |
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| 86 | }; |
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| 87 | void check () |
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| 88 | { if (W > 64) { std::cerr << "sc_bigint with W > 64 is not supported.\n"; exit (20040528); } } |
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| 89 | public: |
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| 90 | sc_bigint() { check (); val = 0; } |
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| 91 | sc_bigint(data_type val_) { check (); val = 0; write (val_); } |
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| 92 | template <int W2> explicit sc_bigint (const sc_bigint<W2> &val_) { write (val_.read());} |
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| 93 | |
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| 94 | inline const data_type& read() const { return val; } |
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| 95 | inline operator const data_type& () const { return read (); } |
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| 96 | // inline void write(int64 val_) { val = val_ & MASK64(W); } |
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| 97 | // inline void write(signed int val_) { val = val_ & MASK32(W); } |
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| 98 | inline void write(data_type val_) { valW = val_; } |
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| 99 | template <int W2> inline void write (const sc_bigint<W2> val_) { write (val_.read ()); } |
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| 100 | inline void write (const sc_bigint<W> val_) { write (val_.read()); }; |
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| 101 | template <typename T> inline sc_bigint& operator = (const T& val_) { write (val_); return *this; } |
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| 102 | |
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| 103 | inline uint32 to_uint () const {return val & MASK32(W);}; |
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| 104 | inline int32 to_int () const {return val & MASK32(W);}; |
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| 105 | inline uint64 to_uint64 () const {return val & MASK64(W);}; |
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| 106 | inline int64 to_int64 () const {return val & MASK64(W);}; |
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| 107 | |
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| 108 | template <typename T> |
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| 109 | inline sc_bigint& operator <<= (T v) |
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| 110 | { valW <<= v; return *this; } |
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| 111 | template <typename T> |
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| 112 | inline sc_bigint& operator >>= (T v) |
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| 113 | { valW >>= v; return *this; } |
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| 114 | template <typename T> |
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| 115 | inline sc_bigint& operator += (T v) |
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| 116 | { valW += v; return *this; } |
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| 117 | template <typename T> |
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| 118 | inline sc_bigint& operator -= (T v) |
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| 119 | { valW -= v; return *this; } |
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| 120 | template <typename T> |
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| 121 | inline sc_bigint& operator *= (T v) |
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| 122 | { valW *= v; return *this; } |
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| 123 | template <typename T> |
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| 124 | inline sc_bigint& operator /= (T v) |
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| 125 | { valW /= v; return *this; } |
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| 126 | template <typename T> |
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| 127 | inline sc_bigint& operator %= (T v) |
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| 128 | { valW %= v; return *this; } |
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| 129 | template <typename T> |
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| 130 | inline sc_bigint& operator &= (T v) |
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| 131 | { valW &= v; return *this; } |
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| 132 | template <typename T> |
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| 133 | inline sc_bigint& operator |= (T v) |
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| 134 | { valW |= v; return *this; } |
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| 135 | template <typename T> |
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| 136 | inline sc_bigint& operator ^= (T v) |
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| 137 | { valW ^= v; return *this; } |
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| 138 | inline sc_uint_bit_ref& operator [] (int v) |
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| 139 | { return valB[v]; } |
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| 140 | inline sc_uint_bit_ref_r& operator [] (int v) const |
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| 141 | { return valB[v]; } |
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| 142 | inline sc_uint_subref range (int left, int right) |
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| 143 | { return (((~0) >> (sizeof (data_type) * 8 - left)) & val) >> right; } |
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| 144 | inline sc_uint_subref_r range (int left, int right) const |
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| 145 | { return (((~0) >> (sizeof (data_type) * 8 - left)) & val) >> right; } |
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| 146 | }; |
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| 147 | |
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| 148 | } /* end of sc_dt namespace */ |
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| 149 | |
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| 150 | #endif /* __SC_BIGINT_H__ */ |
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