Difference between revisions of "Language Reference/Built-in entities/Operators"
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<vp>div</vp> and <vp>quot</vp> are different integral division operators. | <vp>div</vp> and <vp>quot</vp> are different integral division operators. | ||
− | * <vp>div</vp> | + | * <vp>div</vp> truncates towards minus infinite. <vp>mod</vp> is the remainder corresponding to <vp>div</vp>. |
− | * <vp>quot</vp> | + | * <vp>quot</vp> truncates towards zero. <vp>rem</vp> is the remainder corresponding to <vp>quot</vp>. |
For positive results <vp>div</vp> and <vp>quot</vp> have same functionality. | For positive results <vp>div</vp> and <vp>quot</vp> have same functionality. |
Revision as of 01:28, 17 February 2019
See also Operators.
Operator | Description | Remark |
---|---|---|
^ | Power operation | Not defined for 64 bit integral numbers |
- (unary) | Unary minus | |
*, / | Multiplication and division | |
div, mod | The quotient and remainder of an integral division rounded towards minus infinity | Not defined for real's |
quot, rem | The quotient and remainder of an integral division rounded towards zero | Not defined for real's |
+, - | Addition and subtraction | |
otherwise | Otherwise expression |
- The operators are listed from highest to lowest precedence
- All division and multiplication operators have same precedence.
- The the power operator is right associative
- All other operators are left associative.
All binary operators takes two arguments of same base type and returns a value of that base type. Operands and result may be converted using ordinary subtype rules.
Integral division
div and quot are different integral division operators.
- div truncates towards minus infinite. mod is the remainder corresponding to div.
- quot truncates towards zero. rem is the remainder corresponding to quot.
For positive results div and quot have same functionality.
The difference can be seen in this table:
A | B | A div B | A mod B | A quot B | A rem B |
15 | 7 | 2 | 1 | 2 | 1 |
-15 | 7 | -3 | 6 | -2 | -1 |
15 | -7 | -3 | -6 | -2 | 1 |
-15 | -7 | 2 | -1 | 2 | -1 |