56 lines
1.6 KiB
Markdown
56 lines
1.6 KiB
Markdown
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# Comparison
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## `eq`
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```
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(eq value &rest values)
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```
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`eq` returns t if all `values` are equal to `value`, or nil if any are
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not.
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For two values to be equal according to `eq`, they must have the same
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type. In all cases **except strings**, `eq` compares the immediate value
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as returned by [`addr-of`](stdlib_misc.md#addr-of). However, `eq` will
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return t for strings with identical contents, **regardless of their
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addresses**. To check if two strings reference the same location in
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memory, compare their `addr-of`.
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## `=`
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```
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(= value &rest values)
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```
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`=` compares its arguments numerically. If they are all equal, it
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returns `value`, otherwise it returns nil. If any argument is not an int
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or float, `=` returns nil.
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## `<`
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```
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(< value &rest values)
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```
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`<` compares its arguments numerically. If the sequence is monotonically
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increasing, it returns the last argument, otherwise it returns nil. If
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any argument is not an int or float, `<` returns nil.
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## `>`
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```
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(> value &rest values)
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```
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`>` compares its arguments numerically. If the sequence is monotonically
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decreasing, it returns the last argument, otherwise it returns nil. If
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any argument is not an int or float, `>` returns nil.
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## `<=`
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```
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(<= value &rest values)
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```
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`<=` compares its arguments numerically. If the sequence is
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monotonically nondecreasing, it returns the last argument, otherwise it
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returns nil. If any argument is not an int or float, `<=` returns nil.
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## `>=`
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```
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(>= value &rest values)
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```
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`>=` compares its arguments numerically. If the sequence is
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monotonically nonincreasing, it returns the last argument, otherwise it
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returns nil. If any argument is not an int or float, `>=` returns nil.
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