github.com/tawesoft/golib/v2@v2.10.0/legacy/operator/uint32.go (about) 1 package operator 2 3 // Code generated by (tawesoft.co.uk/go/operator) template-numbers.py: DO NOT EDIT. 4 5 6 // Some overflow checks with reference to stackoverflow.com/a/1514309/5654201 7 8 type uint32Unary struct { 9 Identity func(uint32) uint32 10 Not func(uint32) uint32 11 Zero func(uint32) bool 12 NonZero func(uint32) bool 13 Positive func(uint32) bool 14 Negative func(uint32) bool 15 } 16 17 type uint32UnaryChecked struct { 18 } 19 20 type uint32Binary struct { 21 Add func(uint32, uint32) uint32 22 Sub func(uint32, uint32) uint32 23 Mul func(uint32, uint32) uint32 24 Div func(uint32, uint32) uint32 25 Mod func(uint32, uint32) uint32 26 27 Eq func(uint32, uint32) bool 28 Neq func(uint32, uint32) bool 29 Lt func(uint32, uint32) bool 30 Lte func(uint32, uint32) bool 31 Gt func(uint32, uint32) bool 32 Gte func(uint32, uint32) bool 33 34 And func(uint32, uint32) uint32 35 Or func(uint32, uint32) uint32 36 Xor func(uint32, uint32) uint32 37 AndNot func(uint32, uint32) uint32 38 39 Shl func(uint32, uint) uint32 40 Shr func(uint32, uint) uint32 41 } 42 43 type uint32BinaryChecked struct { 44 Add func(uint32, uint32) (uint32, error) 45 Sub func(uint32, uint32) (uint32, error) 46 Mul func(uint32, uint32) (uint32, error) 47 Div func(uint32, uint32) (uint32, error) 48 49 Shl func(uint32, uint) (uint32, error) 50 Shr func(uint32, uint) (uint32, error) 51 } 52 53 type uint32Nary struct { 54 Add func(... uint32) uint32 55 Sub func(... uint32) uint32 56 Mul func(... uint32) uint32 57 } 58 59 type uint32NaryChecked struct { 60 Add func(... uint32) (uint32, error) 61 Sub func(... uint32) (uint32, error) 62 Mul func(... uint32) (uint32, error) 63 } 64 65 // Uint32 implements operations on one (unary), two (binary), or many (nary) arguments of type uint32. 66 var Uint32 = struct { 67 Unary uint32Unary 68 Binary uint32Binary 69 Nary uint32Nary 70 Reduce func(operatorIdentity uint32, operator func(uint32, uint32) uint32, elements ... uint32) uint32 71 }{ 72 Unary: uint32Unary{ 73 Identity: func(a uint32) uint32 { return a }, 74 Not: func(a uint32) uint32 { return ^a }, 75 Zero: func(a uint32) bool { return a == 0 }, 76 NonZero: func(a uint32) bool { return a != 0 }, 77 Positive: uint32UnaryPositive, 78 Negative: uint32UnaryNegative, 79 }, 80 81 Binary: uint32Binary{ 82 Add: func(a uint32, b uint32) uint32 { return a + b }, 83 Sub: func(a uint32, b uint32) uint32 { return a - b }, 84 Mul: func(a uint32, b uint32) uint32 { return a * b }, 85 Div: func(a uint32, b uint32) uint32 { return a / b }, 86 87 Eq: func(a uint32, b uint32) bool { return a == b }, 88 Neq: func(a uint32, b uint32) bool { return a != b }, 89 Lt: func(a uint32, b uint32) bool { return a < b }, 90 Lte: func(a uint32, b uint32) bool { return a <= b }, 91 Gt: func(a uint32, b uint32) bool { return a > b }, 92 Gte: func(a uint32, b uint32) bool { return a >= b }, 93 94 And: func(a uint32, b uint32) uint32 { return a & b }, 95 Or: func(a uint32, b uint32) uint32 { return a | b }, 96 Xor: func(a uint32, b uint32) uint32 { return a ^ b }, 97 AndNot: func(a uint32, b uint32) uint32 { return a &^ b }, 98 Mod: func(a uint32, b uint32) uint32 { return a % b }, 99 100 Shl: func(a uint32, b uint) uint32 { return a << b }, 101 Shr: func(a uint32, b uint) uint32 { return a >> b }, 102 }, 103 104 Nary: uint32Nary{ 105 Add: uint32NaryAdd, 106 Mul: uint32NaryMul, 107 }, 108 109 Reduce: uint32Reduce, 110 } 111 112 // Uint32Checked implements operations on one (unary), two (binary), or many (nary) arguments of type uint32, returning an 113 // error in cases such as overflow or an undefined operation. 114 var Uint32Checked = struct { 115 Unary uint32UnaryChecked 116 Binary uint32BinaryChecked 117 Nary uint32NaryChecked 118 Reduce func(operatorIdentity uint32, operator func(uint32, uint32) (uint32, error), elements ... uint32) (uint32, error) 119 }{ 120 Unary: uint32UnaryChecked{ 121 }, 122 123 Binary: uint32BinaryChecked{ 124 Add: uint32BinaryCheckedAdd, 125 Sub: uint32BinaryCheckedSub, 126 Mul: uint32BinaryCheckedMul, 127 Div: uint32BinaryCheckedDiv, 128 Shl: uint32BinaryCheckedShl, 129 }, 130 131 Nary: uint32NaryChecked{ 132 Add: uint32NaryCheckedAdd, 133 Mul: uint32NaryCheckedMul, 134 }, 135 136 Reduce: uint32CheckedReduce, 137 } 138 139 func uint32UnaryPositive(a uint32) bool { 140 return a > 0 141 } 142 143 func uint32UnaryNegative(a uint32) bool { 144 return a < 0 145 } 146 147 148 149 150 func uint32BinaryCheckedAdd(a uint32, b uint32) (v uint32, err error) { 151 if (b > 0) && (a > (maxUint32 - b)) { return v, ErrorOverflow } 152 if (b < 0) && (a < (minUint32 - b)) { return v, ErrorOverflow } 153 return a + b, nil 154 } 155 156 func uint32BinaryCheckedSub(a uint32, b uint32) (v uint32, err error) { 157 if (b < 0) && (a > (maxUint32 + b)) { return v, ErrorOverflow } 158 if (b > 0) && (a < (minUint32 + b)) { return v, ErrorOverflow } 159 return a - b, nil 160 } 161 162 func uint32BinaryCheckedMul(a uint32, b uint32) (v uint32, err error) { 163 if (a > (maxUint32 / b)) { return v, ErrorOverflow } 164 if (a < (minUint32 / b)) { return v, ErrorOverflow } 165 166 return a * b, nil 167 } 168 169 func uint32BinaryCheckedDiv(a uint32, b uint32) (v uint32, err error) { 170 if (b == 0) { return v, ErrorUndefined } 171 172 return a / b, nil 173 } 174 175 func uint32BinaryCheckedShl(a uint32, b uint) (v uint32, err error) { 176 if b > uint(uint32MostSignificantBit(maxUint32)) { return v, ErrorOverflow } 177 return v, err 178 } 179 180 func uint32MostSignificantBit(a uint32) (result int) { 181 for a > 0 { 182 a >>= 1 183 result++ 184 } 185 return result; 186 } 187 188 func uint32NaryAdd(xs ... uint32) (result uint32) { 189 for i := 0; i < len(xs); i++ { 190 result += xs[i] 191 } 192 return result 193 } 194 195 func uint32NaryCheckedAdd(xs ... uint32) (result uint32, err error) { 196 for i := 0; i < len(xs); i++ { 197 result, err = uint32BinaryCheckedAdd(result, xs[i]) 198 if err != nil { return result, err } 199 } 200 return result, nil 201 } 202 203 func uint32NaryMul(xs ... uint32) (result uint32) { 204 result = 1 205 for i := 0; i < len(xs); i++ { 206 result *= xs[i] 207 } 208 return result 209 } 210 211 func uint32NaryCheckedMul(xs ... uint32) (result uint32, err error) { 212 result = 1 213 for i := 0; i < len(xs); i++ { 214 result, err = uint32BinaryCheckedMul(result, xs[i]) 215 if err != nil { return result, err } 216 } 217 return result, nil 218 } 219 220 func uint32Reduce(operatorIdentity uint32, operator func(uint32, uint32) uint32, elements ... uint32) (result uint32) { 221 result = operatorIdentity 222 for i := 0; i < len(elements); i++ { 223 result = operator(result, elements[i]) 224 } 225 return result 226 } 227 228 func uint32CheckedReduce(operatorIdentity uint32, operator func(uint32, uint32) (uint32, error), elements ... uint32) (result uint32, err error) { 229 result = operatorIdentity 230 for i := 0; i < len(elements); i++ { 231 result, err = operator(result, elements[i]) 232 if err != nil { return result, err } 233 } 234 return result, err 235 } 236