(def single-float)
(def double-float))
-;;; Optimize addition and subsctraction of zero
+;;; Optimize addition and subtraction of zero
(macrolet ((def (op type &rest args)
`(deftransform ,op ((x y) (,type (constant-arg (member ,@args))) *
;; Beware the SNaN!
(deftransform ,name ((x) (single-float) *)
#!+x86 (cond ((csubtypep (lvar-type x)
(specifier-type '(single-float
- (#.(- (expt 2f0 64)))
- (#.(expt 2f0 64)))))
+ (#.(- (expt 2f0 63)))
+ (#.(expt 2f0 63)))))
`(coerce (,',prim-quick (coerce x 'double-float))
'single-float))
(t
(compiler-notify
"unable to avoid inline argument range check~@
- because the argument range (~S) was not within 2^64"
+ because the argument range (~S) was not within 2^63"
(type-specifier (lvar-type x)))
`(coerce (,',prim (coerce x 'double-float)) 'single-float)))
#!-x86 `(coerce (,',prim (coerce x 'double-float)) 'single-float))
(deftransform ,name ((x) (double-float) *)
#!+x86 (cond ((csubtypep (lvar-type x)
(specifier-type '(double-float
- (#.(- (expt 2d0 64)))
- (#.(expt 2d0 64)))))
+ (#.(- (expt 2d0 63)))
+ (#.(expt 2d0 63)))))
`(,',prim-quick x))
(t
(compiler-notify
"unable to avoid inline argument range check~@
- because the argument range (~S) was not within 2^64"
+ because the argument range (~S) was not within 2^63"
(type-specifier (lvar-type x)))
`(,',prim x)))
#!-x86 `(,',prim x)))))