Added support for float32; made float32 and float64 disjoint from rational numbers; misc. numeric primitive changes

This commit is contained in:
waldemar%netscape.com 2002-09-25 23:49:12 +00:00
Родитель fc597051f1
Коммит a9bca0a3dc
1 изменённых файлов: 26 добавлений и 11 удалений

Просмотреть файл

@ -6,6 +6,11 @@
(production :start () start-none)
(deftuple x-long (value (integer-range (neg (expt 2 63)) (- (expt 2 63) 1))))
(deftuple x-u-long (value (integer-range 0 (- (expt 2 64) 1))))
(deftype x-general-number (union long u-long float32 float64))
(deftype x-finite-general-number (union long u-long finite-float32 finite-float64))
(define (x-digit-value (c character)) integer
(cond
((set-in c (range-set-of-ranges character #\0 #\9))
@ -20,24 +25,34 @@
(const s (range-set integer) (range-set-of integer (neg (expt 2 1024)) 0 (expt 2 1024)))
(const a integer (integer-set-min s))
(cond
((= a (expt 2 1024)) (return +infinity))
((= a (neg (expt 2 1024))) (return -infinity))
((/= a 0) (return 78.0))
((< x 0 rational) (return -zero))
(nil (return +zero))))
((= a (expt 2 1024)) (return +infinity64))
((= a (neg (expt 2 1024))) (return -infinity64))
((/= a 0) (return (bottom)))
((< x 0 rational) (return -zero64))
(nil (return +zero64))))
(define (x-float32-to-float64 (x float32)) float64
(case x
(:select (tag +zero32) (return +zero64))
(:select (tag -zero32) (return -zero64))
(:select (tag +infinity32) (return +infinity64))
(:select (tag -infinity32) (return -infinity64))
(:select (tag nan32) (return nan64))
(:narrow nonzero-finite-float32 (return (real-to-float64 (& value x))))))
(define (x-truncate-finite-float64 (x finite-float64)) integer
(rwhen (in x (tag +zero -zero) :narrow-false)
(rwhen (in x (tag +zero64 -zero64) :narrow-false)
(return 0))
(if (> x 0 rational)
(return (floor x))
(return (ceiling x))))
(const r rational (& value x))
(if (> r 0 rational)
(return (floor r))
(return (ceiling r))))
(define (compare (x rational) (y rational)) order
#|(define (compare (x rational) (y rational)) order
(cond
((< x y rational) (return less))
((= x y rational) (return equal))
(nil (return greater))))
(nil (return greater))))|#
)))
(defparameter *sfg* (world-grammar *sfw* 'standard-function-grammar)))