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Function =, /=, <, >, <=, >=
Syntax
- =
&restnumbers+→ generalized-boolean - /=
&restnumbers+→ generalized-boolean - <
&restnumbers+→ generalized-boolean - >
&restnumbers+→ generalized-boolean - <=
&restnumbers+→ generalized-boolean - >=
&restnumbers+→ generalized-boolean
Arguments and Values
- generalized-boolean - a generalized boolean.
Description
=, /=, <, >, <=, and >= perform arithmetic comparisons on their arguments as follows:
<nowiki>=</nowiki>
The value of = is true if all numbers are the same in value; otherwise it is false. Two complexes are considered equal by = if their real and imaginary parts are equal according to =.
<nowiki>/=</nowiki>
<nowiki><</nowiki>
<nowiki>></nowiki>
<nowiki><=</nowiki>
The value of <= is true if the numbers are in monotonically nondecreasing order; otherwise it is false.
<nowiki>>=</nowiki>
The value of >= is true if the numbers are in monotonically nonincreasing order; otherwise it is false.
=, /=, <, >, <=, and >= perform necessary type conversions.
Examples
The uses of these functions are illustrated in the below table.
(= 3 3) is true. | (/= 3 3) is false. |
(= 3 5) is false. | (/= 3 5) is true. |
(= 3 3 3 3) is true. | (/= 3 3 3 3) is false. |
(= 3 3 5 3) is false. | (/= 3 3 5 3) is false. |
(= 3 6 5 2) is false. | (/= 3 6 5 2) is true. |
(= 3 2 3) is false. | (/= 3 2 3) is false. |
(< 3 5) is true. | (<= 3 5) is true. |
(< 3 -5) is false. | (<= 3 -5) is false. |
(< 3 3) is false. | (<= 3 3) is true. |
(< 0 3 4 6 7) is true. | (<= 0 3 4 6 7) is true. |
(< 0 3 4 4 6) is false. | (<= 0 3 4 4 6) is true. |
(> 4 3) is true. | (>= 4 3) is true. |
(> 4 3 2 1 0) is true. | (>= 4 3 2 1 0) is true. |
(> 4 3 3 2 0) is false. | (>= 4 3 3 2 0) is true. |
(> 4 3 1 2 0) is false. | (>= 4 3 1 2 0) is false. |
(= 3) is true. | (/= 3) is true. |
(< 3) is true. | (<= 3) is true. |
(= 3.0 #c(3.0 0.0)) is true. | (/= 3.0 #c(3.0 1.0)) is true. |
(= 3 3.0) is true. | (= 3.0s0 3.0d0) is true. |
(= 0.0 -0.0) is true. | (= 5/2 2.5) is true. |
(> 0.0 -0.0) is false. | (= 0 -0.0) is true. |
(<= 0 x 9) is true if x is between 0 and 9, inclusive. |
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(< 0.0 x 1.0) is true if x is between 0.0 and 1.0, exclusive. |
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(< -1 j (length v)) is true if j is a valid array index for a vector v. |
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Affected By
None.
Exceptional Situations
Might signal type-error if some argument is not a real. Might signal arithmetic-error if otherwise unable to fulfill its contract.
See Also
None.
