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 \epsilon 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 \epsilon of the given format, such that the following expression is true when evaluated:

(not (= (float 1 \epsilon) (- (float 1 \epsilon) \epsilon)))\/