+
+;;; bug 45b reported by PVE
+(dolist (type '(short single double long))
+ (dolist (sign '(positive negative))
+ (let* ((name (find-symbol (format nil "LEAST-~A-~A-FLOAT"
+ sign type)
+ :cl))
+ (value (symbol-value name)))
+ (assert (zerop (/ value 2))))))
+
+;;; bug found by Paul Dietz: bad rounding on small floats
+(assert (= (fround least-positive-short-float least-positive-short-float) 1.0))
+
+;;; bug found by Peter Seibel: scale-float was only accepting float
+;;; exponents, when it should accept all integers. (also bug #269)
+(assert (= (multiple-value-bind (significand expt sign)
+ (integer-decode-float least-positive-double-float)
+ (* (scale-float (float significand 0.0d0) expt) sign))
+ least-positive-double-float))
+(assert (= (multiple-value-bind (significand expt sign)
+ (decode-float least-positive-double-float)
+ (* (scale-float significand expt) sign))
+ least-positive-double-float))
+(assert (= 0.0 (scale-float 1.0 most-negative-fixnum)))
+(assert (= 0.0d0 (scale-float 1.0d0 (1- most-negative-fixnum))))
+(assert (raises-error? (scale-float 1.0 most-positive-fixnum)
+ floating-point-overflow))
+(assert (raises-error? (scale-float 1.0d0 (1+ most-positive-fixnum))
+ floating-point-overflow))