Compares values numerically. If the signs of the operands differ, a value representing each operand ('-1' if the operand is less than zero, '0' if the operand is zero or negative zero, or '1' if the operand is greater than zero) is used in place of that operand for t
(self, a, b)
| 4163 | return a.canonical() |
| 4164 | |
| 4165 | def compare(self, a, b): |
| 4166 | """Compares values numerically. |
| 4167 | |
| 4168 | If the signs of the operands differ, a value representing each operand |
| 4169 | ('-1' if the operand is less than zero, '0' if the operand is zero or |
| 4170 | negative zero, or '1' if the operand is greater than zero) is used in |
| 4171 | place of that operand for the comparison instead of the actual |
| 4172 | operand. |
| 4173 | |
| 4174 | The comparison is then effected by subtracting the second operand from |
| 4175 | the first and then returning a value according to the result of the |
| 4176 | subtraction: '-1' if the result is less than zero, '0' if the result is |
| 4177 | zero or negative zero, or '1' if the result is greater than zero. |
| 4178 | |
| 4179 | >>> ExtendedContext.compare(Decimal('2.1'), Decimal('3')) |
| 4180 | Decimal('-1') |
| 4181 | >>> ExtendedContext.compare(Decimal('2.1'), Decimal('2.1')) |
| 4182 | Decimal('0') |
| 4183 | >>> ExtendedContext.compare(Decimal('2.1'), Decimal('2.10')) |
| 4184 | Decimal('0') |
| 4185 | >>> ExtendedContext.compare(Decimal('3'), Decimal('2.1')) |
| 4186 | Decimal('1') |
| 4187 | >>> ExtendedContext.compare(Decimal('2.1'), Decimal('-3')) |
| 4188 | Decimal('1') |
| 4189 | >>> ExtendedContext.compare(Decimal('-3'), Decimal('2.1')) |
| 4190 | Decimal('-1') |
| 4191 | >>> ExtendedContext.compare(1, 2) |
| 4192 | Decimal('-1') |
| 4193 | >>> ExtendedContext.compare(Decimal(1), 2) |
| 4194 | Decimal('-1') |
| 4195 | >>> ExtendedContext.compare(1, Decimal(2)) |
| 4196 | Decimal('-1') |
| 4197 | """ |
| 4198 | a = _convert_other(a, raiseit=True) |
| 4199 | return a.compare(b, context=self) |
| 4200 | |
| 4201 | def compare_signal(self, a, b): |
| 4202 | """Compares the values of the two operands numerically. |