negative? -- r7rs Definition

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Kind

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predicate;

Extended by

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• negative? (from vonuvoli);

Procedure signature

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Procedure variants:

• ((real-zero) -> (false))
  • input: a value of type real-zero;
  • output: a value of type false;
• ((real-positive) -> (false))
  • input: a value of type real-positive;
  • output: a value of type false;
• ((real-negative) -> (true))
  • input: a value of type real-negative;
  • output: a value of type true;
• ((real) -> (false))
  • input: a value of type real;
  • output: a value of type false;

Exports

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• scheme:base -- (scheme base);

Exports recursive

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• scheme -- (scheme);

Description

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Please refer to zero?.

Referenced-types

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• real-zero;
• false;
• real-positive;
• real-negative;
• true;
• real;