(define-primitive-expander f64vector-set! (vec i x)
(bytevector-ieee-double-native-set! vec (* i 8) x))
+(define (chained-comparison-expander prim-name)
+ (case-lambda
+ ((src) (make-const src #t))
+ ((src a) #f)
+ ((src a b) #f)
+ ((src a b . rest)
+ (let* ((prim (make-primitive-ref src prim-name))
+ (b-sym (gensym "b"))
+ (b* (make-lexical-ref src 'b b-sym)))
+ (make-let src
+ '(b)
+ (list b-sym)
+ (list b)
+ (make-conditional src
+ (make-application src prim (list a b*))
+ (make-application src prim (cons b* rest))
+ (make-const src #f)))))))
+
+(for-each (lambda (prim-name)
+ (hashq-set! *primitive-expand-table* prim-name
+ (chained-comparison-expander prim-name)))
+ '(< > <= >= =))
+
;; Appropriate for use with either 'eqv?' or 'equal?'.
(define maybe-simplify-to-eq
(case-lambda