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ANSI Common Lisp  12 Numbers 12.2 Dictionary of Numbers
| 12.2.77 short-float-epsilon, short-float-negative-epsilon, single-float-epsilon, single-float-negative-epsilon, double-float-epsilon, double-float-negative-epsilon, long-float-epsilon, long-float-negative-epsilon |
Constant Variable |
- Constant Value:
-
implementation-dependent.
- Description:
-
The value of each of the constants short-float-epsilon,
single-float-epsilon,
double-float-epsilon, and long-float-epsilon is
the smallest positive float of the given format,
such that the following expression is true when evaluated:
(not (= (float 1 epsilon) (+ (float 1 epsilon)
epsilon)))
The value of each of the constants short-float-negative-epsilon,
single-float-negative-epsilon,
double-float-negative-epsilon, and
long-float-negative-epsilon is the smallest positive
float of the given format, such that the following
expression is true when evaluated:
(not (= (float 1 epsilon) (- (float 1 epsilon)
epsilon)))
- Allegro CL Implementation Details:
-
None.
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