0.8.21.7:
[sbcl.git] / src / code / late-type.lisp
index 5a1e0e8..147656e 100644 (file)
             (apply #'type-union
                    (mapcar (lambda (x) (complex1 (ctype-of x)))
                            (member-type-members ctype))))
+            ((and (typep ctype 'intersection-type)
+                  ;; FIXME: This is very much a
+                  ;; not-quite-worst-effort, but we are required to do
+                  ;; something here because of our representation of
+                  ;; RATIO as (AND RATIONAL (NOT INTEGER)): we must
+                  ;; allow users to ask about (COMPLEX RATIO).  This
+                  ;; will of course fail to work right on such types
+                  ;; as (AND INTEGER (SATISFIES ZEROP))...
+                  (let ((numbers (remove-if-not
+                                  #'numeric-type-p
+                                  (intersection-type-types ctype))))
+                    (and (car numbers)
+                         (null (cdr numbers))
+                         (eq (numeric-type-complexp (car numbers)) :real)
+                         (complex1 (car numbers))))))
            (t
             (multiple-value-bind (subtypep certainly)
                 (csubtypep ctype (specifier-type 'real))
                   (not-real)
                   ;; ANSI just says that TYPESPEC is any subtype of
                   ;; type REAL, not necessarily a NUMERIC-TYPE. In
-                  ;; particular, at this point TYPESPEC could legally be
-                  ;; an intersection type like (AND REAL (SATISFIES ODDP)),
-                  ;; in which case we fall through the logic above and
-                  ;; end up here, stumped.
-                  (bug "~@<(known bug #145): The type ~S is too hairy to be 
+                  ;; particular, at this point TYPESPEC could legally
+                  ;; be a hairy type like (AND NUMBER (SATISFIES
+                  ;; REALP) (SATISFIES ZEROP)), in which case we fall
+                  ;; through the logic above and end up here,
+                  ;; stumped.
+                  (bug "~@<(known bug #145): The type ~S is too hairy to be ~
                          used for a COMPLEX component.~:@>"
                        typespec)))))))))
 
 ;;; FIXME: It's probably necessary to do something to fix the
 ;;; analogous problem with INTEGER and RATIONAL types. Perhaps
 ;;; bounded RATIONAL types should be represented as (OR RATIO INTEGER).
-(defun coerce-bound (bound type inner-coerce-bound-fun)
+(defun coerce-bound (bound type upperp inner-coerce-bound-fun)
   (declare (type function inner-coerce-bound-fun))
-  (cond ((eql bound '*)
-        bound)
-       ((consp bound)
-        (destructuring-bind (inner-bound) bound
-          (list (funcall inner-coerce-bound-fun inner-bound type))))
-       (t
-        (funcall inner-coerce-bound-fun bound type))))
-(defun inner-coerce-real-bound (bound type)
-  (ecase type
-    (rational (rationalize bound))
-    (float (if (floatp bound)
-              bound
-              ;; Coerce to the widest float format available, to
-              ;; avoid unnecessary loss of precision:
-              (coerce bound 'long-float)))))
-(defun coerced-real-bound (bound type)
-  (coerce-bound bound type #'inner-coerce-real-bound))
-(defun coerced-float-bound (bound type)
-  (coerce-bound bound type #'coerce))
+  (if (eql bound '*)
+      bound
+      (funcall inner-coerce-bound-fun bound type upperp)))
+(defun inner-coerce-real-bound (bound type upperp)
+  #+sb-xc-host (declare (ignore upperp))
+  (let #+sb-xc-host ()
+       #-sb-xc-host
+       ((nl (load-time-value (symbol-value 'sb!xc:most-negative-long-float)))
+        (pl (load-time-value (symbol-value 'sb!xc:most-positive-long-float))))
+    (let ((nbound (if (consp bound) (car bound) bound))
+          (consp (consp bound)))
+      (ecase type
+        (rational
+         (if consp
+             (list (rational nbound))
+             (rational nbound)))
+        (float
+         (cond
+           ((floatp nbound) bound)
+           (t
+            ;; Coerce to the widest float format available, to avoid
+            ;; unnecessary loss of precision, but don't coerce
+            ;; unrepresentable numbers, except on the host where we
+            ;; shouldn't be making these types (but KLUDGE: can't even
+            ;; assert portably that we're not).
+            #-sb-xc-host
+            (ecase upperp
+              ((nil)
+               (when (< nbound nl) (return-from inner-coerce-real-bound nl)))
+              ((t)
+               (when (> nbound pl) (return-from inner-coerce-real-bound pl))))
+            (let ((result (coerce nbound 'long-float)))
+              (if consp (list result) result)))))))))
+(defun inner-coerce-float-bound (bound type upperp)
+  #+sb-xc-host (declare (ignore upperp))
+  (let #+sb-xc-host ()
+       #-sb-xc-host
+       ((nd (load-time-value (symbol-value 'sb!xc:most-negative-double-float)))
+        (pd (load-time-value (symbol-value 'sb!xc:most-positive-double-float)))
+        (ns (load-time-value (symbol-value 'sb!xc:most-negative-single-float)))
+        (ps (load-time-value
+             (symbol-value 'sb!xc:most-positive-single-float))))
+    (let ((nbound (if (consp bound) (car bound) bound))
+          (consp (consp bound)))
+      (ecase type
+        (single-float
+         (cond
+           ((typep nbound 'single-float) bound)
+           (t
+            #-sb-xc-host
+            (ecase upperp
+              ((nil)
+               (when (< nbound ns) (return-from inner-coerce-float-bound ns)))
+              ((t)
+               (when (> nbound ps) (return-from inner-coerce-float-bound ps))))
+            (let ((result (coerce nbound 'single-float)))
+              (if consp (list result) result)))))
+        (double-float
+         (cond
+           ((typep nbound 'double-float) bound)
+           (t
+            #-sb-xc-host
+            (ecase upperp
+              ((nil)
+               (when (< nbound nd) (return-from inner-coerce-float-bound nd)))
+              ((t)
+               (when (> nbound pd) (return-from inner-coerce-float-bound pd))))
+            (let ((result (coerce nbound 'double-float)))
+              (if consp (list result) result)))))))))
+(defun coerced-real-bound (bound type upperp)
+  (coerce-bound bound type upperp #'inner-coerce-real-bound))
+(defun coerced-float-bound (bound type upperp)
+  (coerce-bound bound type upperp #'inner-coerce-float-bound))
 (!def-type-translator real (&optional (low '*) (high '*))
-  (specifier-type `(or (float ,(coerced-real-bound  low 'float)
-                             ,(coerced-real-bound high 'float))
-                      (rational ,(coerced-real-bound  low 'rational)
-                                ,(coerced-real-bound high 'rational)))))
+  (specifier-type `(or (float ,(coerced-real-bound  low 'float nil)
+                             ,(coerced-real-bound high 'float t))
+                      (rational ,(coerced-real-bound  low 'rational nil)
+                                ,(coerced-real-bound high 'rational t)))))
 (!def-type-translator float (&optional (low '*) (high '*))
   (specifier-type 
-   `(or (single-float ,(coerced-float-bound  low 'single-float)
-                     ,(coerced-float-bound high 'single-float))
-       (double-float ,(coerced-float-bound  low 'double-float)
-                     ,(coerced-float-bound high 'double-float))
+   `(or (single-float ,(coerced-float-bound  low 'single-float nil)
+                     ,(coerced-float-bound high 'single-float t))
+       (double-float ,(coerced-float-bound  low 'double-float nil)
+                     ,(coerced-float-bound high 'double-float t))
        #!+long-float ,(error "stub: no long float support yet"))))
 
 (defmacro !define-float-format (f)
               (if (eq (car dims) '*)
                   (case eltype
                     (bit 'bit-vector)
-                    ((base-char character) 'base-string)
+                    ((base-char #!-sb-unicode character) 'base-string)
                     (* 'vector)
                     (t `(vector ,eltype)))
                   (case eltype
                     (bit `(bit-vector ,(car dims)))
-                    ((base-char character) `(base-string ,(car dims)))
+                    ((base-char #!-sb-unicode character)
+                      `(base-string ,(car dims)))
                     (t `(vector ,eltype ,(car dims)))))
               (if (eq (car dims) '*)
                   (case eltype
                     (bit 'simple-bit-vector)
-                    ((base-char character) 'simple-base-string)
+                    ((base-char #!-sb-unicode character) 'simple-base-string)
                     ((t) 'simple-vector)
                     (t `(simple-array ,eltype (*))))
                   (case eltype
                     (bit `(simple-bit-vector ,(car dims)))
-                    ((base-char character) `(simple-base-string ,(car dims)))
+                    ((base-char #!-sb-unicode character)
+                      `(simple-base-string ,(car dims)))
                     ((t) `(simple-vector ,(car dims)))
                     (t `(simple-array ,eltype ,dims))))))
          (t
              (values :complex (min num imag) (max num imag)))
            (values :real num num))
       (make-numeric-type :class (etypecase num
-                                 (integer 'integer)
+                                 (integer (if (complexp x)
+                                               (if (integerp (imagpart x))
+                                                   'integer
+                                                   'rational)
+                                               'integer))
                                  (rational 'rational)
                                  (float 'float))
                         :format (and (floatp num) (float-format-name num))