log -- r7rs Definition

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Kind

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procedure;

Implemented by

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• log (from vonuvoli);

Procedure signature

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Procedure variants:

• ((real-positive) -> (real-not-nan))
  • input: a value of type real-positive;
  • output: a value of type real-not-nan;
• ((real-negative) -> (complex-not-nan))
  • input: a value of type real-negative;
  • output: a value of type complex-not-nan;
• ((complex-not-nan) -> (complex-not-nan))
  • input: a value of type complex-not-nan;
  • output: a value of type complex-not-nan;
• ((number) -> (number-nan))
  • input: a value of type number;
  • output: a value of type number-nan;
• ((real-positive real-positive) -> (real-not-nan))
  • inputs:
    • a value of type real-positive;
    • a value of type real-positive;
  • output: a value of type real-not-nan;
• ((real-positive real-negative) -> (complex-not-nan))
  • inputs:
    • a value of type real-positive;
    • a value of type real-negative;
  • output: a value of type complex-not-nan;
• ((real-negative real-not-nan) -> (complex-not-nan))
  • inputs:
    • a value of type real-negative;
    • a value of type real-not-nan;
  • output: a value of type complex-not-nan;
• ((complex-not-nan complex-not-nan) -> (complex-not-nan))
  • inputs:
    • a value of type complex-not-nan;
    • a value of type complex-not-nan;
  • output: a value of type complex-not-nan;
• ((number number) -> (number-nan))
  • inputs:
    • a value of type number;
    • a value of type number;
  • output: a value of type number-nan;

Exports

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• scheme:inexact -- (scheme inexact);

Exports recursive

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• scheme -- (scheme);

Description

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Please refer to exp.

Referenced-types

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• real-positive;
• real-not-nan;
• real-negative;
• complex-not-nan;
• number;
• number-nan;