Movatterモバイル変換

Value Type:

one of theatomic type specifiersshort-float,single-float,double-float, orlong-float, or else some othertype specifier defined by theimplementation to be acceptable.

Initial Value:

Thesymbolsingle-float.

Description:

Controls the floating-point format that is to be used when reading a floating-point number that has noexponent marker or that hase orE for anexponent marker. Otherexponent markers explicitly prescribe the floating-point format to be used.

The printer uses*read-default-float-format* to guide the choice ofexponent markers when printing floating-point numbers.

Examples:

 (let ((*read-default-float-format* 'double-float))   (read-from-string "(1.0 1.0e0 1.0s0 1.0f0 1.0d0 1.0L0)"))=>  (1.0   1.0   1.0   1.0 1.0   1.0)   ;Implementation has float format F.=>  (1.0   1.0   1.0s0 1.0 1.0   1.0)   ;Implementation has float formats S and F.=>  (1.0d0 1.0d0 1.0   1.0 1.0d0 1.0d0) ;Implementation has float formats F and D.=>  (1.0d0 1.0d0 1.0s0 1.0 1.0d0 1.0d0) ;Implementation has float formats S, F, D.=>  (1.0d0 1.0d0 1.0   1.0 1.0d0 1.0L0) ;Implementation has float formats F, D, L.=>  (1.0d0 1.0d0 1.0s0 1.0 1.0d0 1.0L0) ;Implementation has formats S, F, D, L.

Affected By: None.

See Also: None.

Notes: None.