2 % (c) The University of Glasgow, 2000
4 \section[PrelInt]{Module @PrelInt@}
7 {-# OPTIONS -monly-3-regs #-}
11 Int8(..), Int16(..), Int32(..), Int64(..)
13 , intToInt8 -- :: Int -> Int8
14 , intToInt16 -- :: Int -> Int16
15 , intToInt32 -- :: Int -> Int32
16 , intToInt64 -- :: Int -> Int64
18 , integerToInt8 -- :: Integer -> Int8
19 , integerToInt16 -- :: Integer -> Int16
20 , integerToInt32 -- :: Integer -> Int32
21 , integerToInt64 -- :: Integer -> Int64
23 , int8ToInt -- :: Int8 -> Int
24 , int8ToInteger -- :: Int8 -> Integer
25 , int8ToInt16 -- :: Int8 -> Int16
26 , int8ToInt32 -- :: Int8 -> Int32
27 , int8ToInt64 -- :: Int8 -> Int64
29 , int16ToInt -- :: Int16 -> Int
30 , int16ToInteger -- :: Int16 -> Integer
31 , int16ToInt8 -- :: Int16 -> Int8
32 , int16ToInt32 -- :: Int16 -> Int32
33 , int16ToInt64 -- :: Int16 -> Int64
35 , int32ToInt -- :: Int32 -> Int
36 , int32ToInteger -- :: Int32 -> Integer
37 , int32ToInt8 -- :: Int32 -> Int8
38 , int32ToInt16 -- :: Int32 -> Int16
39 , int32ToInt64 -- :: Int32 -> Int64
41 , int64ToInt -- :: Int64 -> Int
42 , int64ToInteger -- :: Int64 -> Integer
43 , int64ToInt8 -- :: Int64 -> Int8
44 , int64ToInt16 -- :: Int64 -> Int16
45 , int64ToInt32 -- :: Int64 -> Int32
48 , intToInt8#, i8ToInt#, intToInt16#, i16ToInt#, intToInt32#, i32ToInt#,
49 , intToInt64#, plusInt64#, minusInt64#, negateInt64#
61 -- ---------------------------------------------------------------------------
62 -- Coercion functions (DEPRECATED)
63 -- ---------------------------------------------------------------------------
65 intToInt8 :: Int -> Int8
66 intToInt16 :: Int -> Int16
67 intToInt32 :: Int -> Int32
68 intToInt64 :: Int -> Int64
70 integerToInt8 :: Integer -> Int8
71 integerToInt16 :: Integer -> Int16
72 integerToInt32 :: Integer -> Int32
73 integerToInt64 :: Integer -> Int64
75 int8ToInt :: Int8 -> Int
76 int8ToInteger :: Int8 -> Integer
77 int8ToInt16 :: Int8 -> Int16
78 int8ToInt32 :: Int8 -> Int32
79 int8ToInt64 :: Int8 -> Int64
81 int16ToInt :: Int16 -> Int
82 int16ToInteger :: Int16 -> Integer
83 int16ToInt8 :: Int16 -> Int8
84 int16ToInt32 :: Int16 -> Int32
85 int16ToInt64 :: Int16 -> Int64
87 int32ToInt :: Int32 -> Int
88 int32ToInteger :: Int32 -> Integer
89 int32ToInt8 :: Int32 -> Int8
90 int32ToInt16 :: Int32 -> Int16
91 int32ToInt64 :: Int32 -> Int64
93 int64ToInt :: Int64 -> Int
94 int64ToInteger :: Int64 -> Integer
95 int64ToInt8 :: Int64 -> Int8
96 int64ToInt16 :: Int64 -> Int16
97 int64ToInt32 :: Int64 -> Int32
99 integerToInt8 = fromInteger
100 integerToInt16 = fromInteger
101 integerToInt32 = fromInteger
103 int8ToInt16 = intToInt16 . int8ToInt
104 int8ToInt32 = intToInt32 . int8ToInt
105 int16ToInt32 = intToInt32 . int16ToInt
107 int16ToInt8 (I16# x) = I8# (intToInt8# x)
108 int32ToInt8 (I32# x) = I8# (intToInt8# x)
109 int32ToInt16 (I32# x) = I16# (intToInt16# x)
111 int8ToInteger = toInteger
112 int8ToInt64 = int32ToInt64 . int8ToInt32
114 int16ToInteger = toInteger
115 int16ToInt64 = int32ToInt64 . int16ToInt32
117 int32ToInteger = toInteger
119 int64ToInt8 = int32ToInt8 . int64ToInt32
120 int64ToInt16 = int32ToInt16 . int64ToInt32
122 -----------------------------------------------------------------------------
123 -- The following rules for fromIntegral remove the need to export specialized
124 -- conversion functions.
125 -----------------------------------------------------------------------------
128 "fromIntegral/Int->Int8" fromIntegral = intToInt8;
129 "fromIntegral/Int->Int16" fromIntegral = intToInt16;
130 "fromIntegral/Int->Int32" fromIntegral = intToInt32;
131 "fromIntegral/Int->Int64" fromIntegral = intToInt64;
133 "fromIntegral/Integer->Int8" fromIntegral = integerToInt8;
134 "fromIntegral/Integer->Int16" fromIntegral = integerToInt16;
135 "fromIntegral/Integer->Int32" fromIntegral = integerToInt32;
136 "fromIntegral/Integer->Int64" fromIntegral = integerToInt64;
138 "fromIntegral/Int8->Int" fromIntegral = int8ToInt;
139 "fromIntegral/Int8->Integer" fromIntegral = int8ToInteger;
140 "fromIntegral/Int8->Int16" fromIntegral = int8ToInt16;
141 "fromIntegral/Int8->Int32" fromIntegral = int8ToInt32;
142 "fromIntegral/Int8->Int64" fromIntegral = int8ToInt64;
144 "fromIntegral/Int16->Int" fromIntegral = int16ToInt;
145 "fromIntegral/Int16->Integer" fromIntegral = int16ToInteger;
146 "fromIntegral/Int16->Int8" fromIntegral = int16ToInt8;
147 "fromIntegral/Int16->Int32" fromIntegral = int16ToInt32;
148 "fromIntegral/Int16->Int64" fromIntegral = int16ToInt64;
150 "fromIntegral/Int32->Int" fromIntegral = int32ToInt;
151 "fromIntegral/Int32->Integer" fromIntegral = int32ToInteger;
152 "fromIntegral/Int32->Int8" fromIntegral = int32ToInt8;
153 "fromIntegral/Int32->Int16" fromIntegral = int32ToInt16;
154 "fromIntegral/Int32->Int64" fromIntegral = int32ToInt64;
156 "fromIntegral/Int64->Int" fromIntegral = int64ToInt;
157 "fromIntegral/Int64->Integer" fromIntegral = int64ToInteger;
158 "fromIntegral/Int64->Int8" fromIntegral = int64ToInt8;
159 "fromIntegral/Int64->Int16" fromIntegral = int64ToInt16;
160 "fromIntegral/Int64->Int32" fromIntegral = int64ToInt32
163 -- -----------------------------------------------------------------------------
165 -- -----------------------------------------------------------------------------
169 instance CCallable Int8
170 instance CReturnable Int8
172 int8ToInt (I8# x) = I# (i8ToInt# x)
174 i8ToInt# :: Int# -> Int#
175 i8ToInt# x = if x <=# 0x7f# then x else x -# 0x100#
177 -- This doesn't perform any bounds checking on the value it is passed,
178 -- nor its sign, i.e., show (intToInt8 511) => "-1"
179 intToInt8 (I# x) = I8# (intToInt8# x)
181 intToInt8# :: Int# -> Int#
182 intToInt8# i# = word2Int# ((int2Word# i#) `and#` int2Word# 0xff#)
184 instance Eq Int8 where
185 (I8# x#) == (I8# y#) = x# ==# y#
186 (I8# x#) /= (I8# y#) = x# /=# y#
188 instance Ord Int8 where
189 compare (I8# x#) (I8# y#) = compareInt# (i8ToInt# x#) (i8ToInt# y#)
191 instance Num Int8 where
192 (I8# x#) + (I8# y#) = I8# (intToInt8# (x# +# y#))
193 (I8# x#) - (I8# y#) = I8# (intToInt8# (x# -# y#))
194 (I8# x#) * (I8# y#) = I8# (intToInt8# (x# *# y#))
198 else I8# (0x100# -# x#)
202 fromInteger (S# i#) = I8# (intToInt8# i#)
203 fromInteger (J# s# d#) = I8# (intToInt8# (integer2Int# s# d#))
205 instance Bounded Int8 where
209 instance Real Int8 where
210 toRational x = toInteger x % 1
212 instance Integral Int8 where
214 | x > 0 && y < 0 = quotInt8 (x-y-1) y
215 | x < 0 && y > 0 = quotInt8 (x-y+1) y
216 | otherwise = quotInt8 x y
217 quot x@(I8# _) y@(I8# y#)
218 | y# /=# 0# = x `quotInt8` y
219 | otherwise = divZeroError "quot{Int8}" x
220 rem x@(I8# _) y@(I8# y#)
221 | y# /=# 0# = x `remInt8` y
222 | otherwise = divZeroError "rem{Int8}" x
224 | x > 0 && y < 0 || x < 0 && y > 0 = if r/=0 then r+y else 0
226 where r = remInt8 x y
228 a@(I8# _) `quotRem` b@(I8# _) = (a `quotInt8` b, a `remInt8` b)
229 toInteger i8 = toInteger (int8ToInt i8)
232 remInt8, quotInt8 :: Int8 -> Int8 -> Int8
233 remInt8 (I8# x) (I8# y) = I8# (intToInt8# ((i8ToInt# x) `remInt#` (i8ToInt# y)))
234 quotInt8 (I8# x) (I8# y) = I8# (intToInt8# ((i8ToInt# x) `quotInt#` (i8ToInt# y)))
236 instance Ix Int8 where
239 | inRange b i = int8ToInt (i - m)
240 | otherwise = indexError b i "Int8"
241 inRange (m,n) i = m <= i && i <= n
243 instance Enum Int8 where
245 | i == maxBound = succError "Int8"
248 | i == minBound = predError "Int8"
252 | x >= fromIntegral (minBound::Int8) && x <= fromIntegral (maxBound::Int8)
255 = toEnumError "Int8" x (minBound::Int8,maxBound::Int8)
258 enumFrom e1 = map toEnum [fromEnum e1 .. fromEnum (maxBound::Int8)]
260 map toEnum [fromEnum e1, fromEnum e2 .. fromEnum (last::Int8)]
264 | otherwise = maxBound
266 instance Read Int8 where
267 readsPrec p s = [ (intToInt8 x,r) | (x,r) <- readsPrec p s ]
269 instance Show Int8 where
270 showsPrec p i8 = showsPrec p (int8ToInt i8)
272 binop8 :: (Int32 -> Int32 -> a) -> (Int8 -> Int8 -> a)
273 binop8 op x y = int8ToInt32 x `op` int8ToInt32 y
275 instance Bits Int8 where
276 (I8# x) .&. (I8# y) = I8# (word2Int# ((int2Word# x) `and#` (int2Word# y)))
277 (I8# x) .|. (I8# y) = I8# (word2Int# ((int2Word# x) `or#` (int2Word# y)))
278 (I8# x) `xor` (I8# y) = I8# (word2Int# ((int2Word# x) `xor#` (int2Word# y)))
279 complement (I8# x) = I8# (word2Int# ((int2Word# x) `xor#` (int2Word# 0xff#)))
280 shift (I8# x) i@(I# i#)
281 | i > 0 = I8# (intToInt8# (iShiftL# (i8ToInt# x) i#))
282 | otherwise = I8# (intToInt8# (iShiftRA# (i8ToInt# x) (negateInt# i#)))
283 i8@(I8# x) `rotate` (I# i)
286 I8# (intToInt8# ( word2Int# (
287 (int2Word# (iShiftL# (i8ToInt# x) i'))
289 (int2Word# (iShiftRA# (word2Int# (
291 (int2Word# (0x100# -# pow2# i2))))
293 | otherwise = rotate i8 (I# (8# +# i))
295 i' = word2Int# (int2Word# i `and#` int2Word# 7#)
300 pow2# :: Int# -> Int#
301 pow2# x# = iShiftL# 1# x#
303 pow2_64# :: Int# -> Int64#
304 pow2_64# x# = word64ToInt64# (shiftL64# (wordToWord64# (int2Word# 1#)) x#)
306 -- -----------------------------------------------------------------------------
308 -- -----------------------------------------------------------------------------
310 data Int16 = I16# Int#
312 instance CCallable Int16
313 instance CReturnable Int16
315 int16ToInt (I16# x) = I# (i16ToInt# x)
317 i16ToInt# :: Int# -> Int#
318 i16ToInt# x = if x <=# 0x7fff# then x else x -# 0x10000#
319 -- x's upper 16 bits should already be zero
321 -- This doesn't perform any bounds checking on the value it is passed,
322 -- nor its sign, i.e., show (intToInt8 131071) => "-1"
323 intToInt16 (I# x) = I16# (intToInt16# x)
325 intToInt16# :: Int# -> Int#
326 intToInt16# i# = word2Int# ((int2Word# i#) `and#` int2Word# 0xffff#)
328 instance Eq Int16 where
329 (I16# x#) == (I16# y#) = x# ==# y#
330 (I16# x#) /= (I16# y#) = x# /=# y#
332 instance Ord Int16 where
333 compare (I16# x#) (I16# y#) = compareInt# (i16ToInt# x#) (i16ToInt# y#)
335 instance Num Int16 where
336 (I16# x#) + (I16# y#) = I16# (intToInt16# (x# +# y#))
337 (I16# x#) - (I16# y#) = I16# (intToInt16# (x# -# y#))
338 (I16# x#) * (I16# y#) = I16# (intToInt16# (x# *# y#))
342 else I16# (0x10000# -# x#)
345 fromInteger (S# i#) = I16# (intToInt16# i#)
346 fromInteger (J# s# d#) = I16# (intToInt16# (integer2Int# s# d#))
348 instance Bounded Int16 where
352 instance Real Int16 where
353 toRational x = toInteger x % 1
355 instance Integral Int16 where
357 | x > 0 && y < 0 = quotInt16 (x-y-1) y
358 | x < 0 && y > 0 = quotInt16 (x-y+1) y
359 | otherwise = quotInt16 x y
360 quot x@(I16# _) y@(I16# y#)
361 | y# /=# 0# = x `quotInt16` y
362 | otherwise = divZeroError "quot{Int16}" x
363 rem x@(I16# _) y@(I16# y#)
364 | y# /=# 0# = x `remInt16` y
365 | otherwise = divZeroError "rem{Int16}" x
367 | x > 0 && y < 0 || x < 0 && y > 0 = if r/=0 then r+y else 0
369 where r = remInt16 x y
371 a@(I16# _) `quotRem` b@(I16# _) = (a `quotInt16` b, a `remInt16` b)
372 toInteger i16 = toInteger (int16ToInt i16)
374 remInt16, quotInt16 :: Int16 -> Int16 -> Int16
375 remInt16 (I16# x) (I16# y) = I16# (intToInt16# ((i16ToInt# x) `remInt#` (i16ToInt# y)))
376 quotInt16 (I16# x) (I16# y) = I16# (intToInt16# ((i16ToInt# x) `quotInt#` (i16ToInt# y)))
377 instance Ix Int16 where
380 | inRange b i = int16ToInt (i - m)
381 | otherwise = indexError b i "Int16"
382 inRange (m,n) i = m <= i && i <= n
384 instance Enum Int16 where
386 | i == maxBound = succError "Int16"
390 | i == minBound = predError "Int16"
394 | x >= fromIntegral (minBound::Int16) && x <= fromIntegral (maxBound::Int16)
397 = toEnumError "Int16" x (minBound::Int16, maxBound::Int16)
399 fromEnum = int16ToInt
401 enumFrom e1 = map toEnum [fromEnum e1 .. fromEnum (maxBound::Int16)]
402 enumFromThen e1 e2 = map toEnum [fromEnum e1, fromEnum e2 .. fromEnum (last::Int16)]
405 | otherwise = maxBound
407 instance Read Int16 where
408 readsPrec p s = [ (intToInt16 x,r) | (x,r) <- readsPrec p s ]
410 instance Show Int16 where
411 showsPrec p i16 = showsPrec p (int16ToInt i16)
414 binop16 :: (Int32 -> Int32 -> a) -> (Int16 -> Int16 -> a)
415 binop16 op x y = int16ToInt32 x `op` int16ToInt32 y
417 instance Bits Int16 where
418 (I16# x) .&. (I16# y) = I16# (word2Int# ((int2Word# x) `and#` (int2Word# y)))
419 (I16# x) .|. (I16# y) = I16# (word2Int# ((int2Word# x) `or#` (int2Word# y)))
420 (I16# x) `xor` (I16# y) = I16# (word2Int# ((int2Word# x) `xor#` (int2Word# y)))
421 complement (I16# x) = I16# (word2Int# ((int2Word# x) `xor#` (int2Word# 0xffff#)))
422 shift (I16# x) i@(I# i#)
423 | i > 0 = I16# (intToInt16# (iShiftL# (i16ToInt# x) i#))
424 | otherwise = I16# (intToInt16# (iShiftRA# (i16ToInt# x) (negateInt# i#)))
425 i16@(I16# x) `rotate` (I# i)
428 I16# (intToInt16# (word2Int# (
429 (int2Word# (iShiftL# (i16ToInt# x) i'))
431 (int2Word# (iShiftRA# ( word2Int# (
432 (int2Word# x) `and#` (int2Word# (0x100# -# pow2# i2))))
434 | otherwise = rotate i16 (I# (16# +# i))
436 i' = word2Int# (int2Word# i `and#` int2Word# 15#)
441 -- -----------------------------------------------------------------------------
443 -- -----------------------------------------------------------------------------
445 data Int32 = I32# Int#
447 instance CCallable Int32
448 instance CReturnable Int32
450 int32ToInt (I32# x) = I# (i32ToInt# x)
452 i32ToInt# :: Int# -> Int#
453 #if WORD_SIZE_IN_BYTES > 4
454 i32ToInt# x = if x' <=# 0x7fffffff# then x' else x' -# 0x100000000#
455 where x' = word2Int# (int2Word# x `and#` int2Word# 0xffffffff#)
460 intToInt32 (I# x) = I32# (intToInt32# x)
462 intToInt32# :: Int# -> Int#
463 #if WORD_SIZE_IN_BYTES > 4
464 intToInt32# i# = word2Int# ((int2Word# i#) `and#` int2Word# 0xffffffff#)
469 instance Eq Int32 where
470 (I32# x#) == (I32# y#) = x# ==# y#
471 (I32# x#) /= (I32# y#) = x# /=# y#
473 instance Ord Int32 where
474 compare (I32# x#) (I32# y#) = compareInt# (i32ToInt# x#) (i32ToInt# y#)
476 instance Num Int32 where
477 (I32# x#) + (I32# y#) = I32# (intToInt32# (x# +# y#))
478 (I32# x#) - (I32# y#) = I32# (intToInt32# (x# -# y#))
479 (I32# x#) * (I32# y#) = I32# (intToInt32# (x# *# y#))
480 #if WORD_SIZE_IN_BYTES > 4
484 else I32# (intToInt32# (0x100000000# -# x'))
486 negate (I32# x) = I32# (negateInt# x)
490 fromInteger (S# i#) = I32# (intToInt32# i#)
491 fromInteger (J# s# d#) = I32# (intToInt32# (integer2Int# s# d#))
494 instance Bounded Int32 where
495 minBound = int2Int32 minBound
496 maxBound = int2Int32 maxBound
498 int2Int32 :: Int -> Int32
499 int2Int32 (I# i#) = I32# (intToInt32# i#)
501 instance Real Int32 where
502 toRational x = toInteger x % 1
504 instance Integral Int32 where
506 | x > 0 && y < 0 = quotInt32 (x-y-1) y
507 | x < 0 && y > 0 = quotInt32 (x-y+1) y
508 | otherwise = quotInt32 x y
509 quot x@(I32# _) y@(I32# y#)
510 | y# /=# 0# = x `quotInt32` y
511 | otherwise = divZeroError "quot{Int32}" x
512 rem x@(I32# _) y@(I32# y#)
513 | y# /=# 0# = x `remInt32` y
514 | otherwise = divZeroError "rem{Int32}" x
516 | x > 0 && y < 0 || x < 0 && y > 0 = if r/=0 then r+y else 0
518 where r = remInt32 x y
520 a@(I32# _) `quotRem` b@(I32# _) = (a `quotInt32` b, a `remInt32` b)
521 toInteger i32 = toInteger (int32ToInt i32)
523 remInt32, quotInt32 :: Int32 -> Int32 -> Int32
524 remInt32 (I32# x) (I32# y) = I32# (intToInt32# ((i32ToInt# x) `remInt#` (i32ToInt# y)))
525 quotInt32 (I32# x) (I32# y) = I32# (intToInt32# ((i32ToInt# x) `quotInt#` (i32ToInt# y)))
527 instance Ix Int32 where
530 | inRange b i = int32ToInt (i - m)
531 | otherwise = indexError b i "Int32"
532 inRange (m,n) i = m <= i && i <= n
534 instance Enum Int32 where
536 | i == maxBound = succError "Int32"
540 | i == minBound = predError "Int32"
544 -- with Int having the same range as Int32, the following test
545 -- shouldn't fail. However, having it here
546 | x >= fromIntegral (minBound::Int32) && x <= fromIntegral (maxBound::Int32)
549 = toEnumError "Int32" x (minBound::Int32, maxBound::Int32)
551 fromEnum = int32ToInt
553 enumFrom e1 = map toEnum [fromEnum e1 .. fromEnum (maxBound::Int32)]
554 enumFromThen e1 e2 = map toEnum [fromEnum e1, fromEnum e2 .. fromEnum (last::Int32)]
558 | otherwise = maxBound
561 instance Read Int32 where
562 readsPrec p s = [ (intToInt32 x,r) | (x,r) <- readsPrec p s ]
564 instance Show Int32 where
565 showsPrec p i32 = showsPrec p (int32ToInt i32)
567 instance Bits Int32 where
568 (I32# x) .&. (I32# y) = I32# (word2Int# ((int2Word# x) `and#` (int2Word# y)))
569 (I32# x) .|. (I32# y) = I32# (word2Int# ((int2Word# x) `or#` (int2Word# y)))
570 (I32# x) `xor` (I32# y) = I32# (word2Int# ((int2Word# x) `xor#` (int2Word# y)))
571 #if WORD_SIZE_IN_BYTES > 4
572 complement (I32# x) = I32# (word2Int# ((int2Word# x) `xor#` (int2Word# 0xffffffff#)))
574 complement (I32# x) = I32# (word2Int# ((int2Word# x) `xor#` (int2Word# (negateInt# 1#))))
576 shift (I32# x) i@(I# i#)
577 | i > 0 = I32# (intToInt32# (iShiftL# (i32ToInt# x) i#))
578 | otherwise = I32# (intToInt32# (iShiftRA# (i32ToInt# x) (negateInt# i#)))
579 i32@(I32# x) `rotate` (I# i)
582 -- ( (x<<i') | ((x&(0x100000000-2^i2))>>i2)
583 I32# (intToInt32# ( word2Int# (
584 (int2Word# (iShiftL# (i32ToInt# x) i'))
586 (int2Word# (iShiftRA# (word2Int# (
589 (int2Word# (maxBound# -# pow2# i2 +# 1#))))
591 | otherwise = rotate i32 (I# (32# +# i))
593 i' = word2Int# (int2Word# i `and#` int2Word# 31#)
595 (I32# maxBound#) = maxBound
599 -- -----------------------------------------------------------------------------
601 -- -----------------------------------------------------------------------------
603 #if WORD_SIZE_IN_BYTES == 8
604 data Int64 = I64# Int#
606 int32ToInt64 (I32# i#) = I64# i#
608 intToInt32# :: Int# -> Int#
609 intToInt32# i# = word2Int# ((int2Word# i#) `and#` (case (maxBound::Word32) of W# x# -> x#))
611 int64ToInt32 (I64# i#) = I32# (intToInt32# w#)
613 instance Eq Int64 where
614 (I64# x) == (I64# y) = x `eqInt#` y
615 (I64# x) /= (I64# y) = x `neInt#` y
617 instance Ord Int32 where
618 compare (I64# x#) (I64# y#) = compareInt# x# y#
620 instance Num Int64 where
621 (I64# x) + (I64# y) = I64# (x +# y)
622 (I64# x) - (I64# y) = I64# (x -# y)
623 (I64# x) * (I64# y) = I64# (x *# y)
624 negate w@(I64# x) = I64# (negateInt# x)
627 fromInteger (S# i#) = I64# i#
628 fromInteger (J# s# d#) = I64# (integer2Int# s# d#)
630 instance Bounded Int64 where
631 minBound = integerToInt64 (-0x8000000000000000)
632 maxBound = integerToInt64 0x7fffffffffffffff
634 instance Integral Int64 where
636 | x > 0 && y < 0 = quotInt64 (x-y-1) y
637 | x < 0 && y > 0 = quotInt64 (x-y+1) y
638 | otherwise = quotInt64 x y
640 quot x@(I64# _) y@(I64# y#)
641 | y# /=# 0# = x `quotInt64` y
642 | otherwise = divZeroError "quot{Int64}" x
644 rem x@(I64# _) y@(I64# y#)
645 | y# /=# 0# = x `remInt64` y
646 | otherwise = divZeroError "rem{Int64}" x
649 | x > 0 && y < 0 || x < 0 && y > 0 = if r/=0 then r+y else 0
651 where r = remInt64 x y
653 a@(I64# _) `quotRem` b@(I64# _) = (a `quotInt64` b, a `remInt64` b)
654 toInteger (I64# i#) = toInteger (I# i#)
656 remInt64 (I64# x) (I64# y) = I64# (x `remInt#` y)
657 quotInt64 (I64# x) (I64# y) = I64# (x `quotInt#` y)
659 int64ToInteger (I64# i#) = toInteger (I# i#)
660 integerToInt64 i = case fromInteger i of { I# i# -> I64# i# }
662 intToInt64 (I# i#) = I64# i#
663 int64ToInt (I64# i#) = I# i#
666 --assume: support for long-longs
667 data Int64 = I64# Int64#
669 int32ToInt64 (I32# i#) = I64# (intToInt64# i#)
670 int64ToInt32 (I64# i#) = I32# (int64ToInt# i#)
672 int64ToInteger (I64# x#) =
673 case int64ToInteger# x# of
674 (# s#, p# #) -> J# s# p#
676 integerToInt64 (S# i#) = I64# (intToInt64# i#)
677 integerToInt64 (J# s# d#) = I64# (integerToInt64# s# d#)
679 instance Eq Int64 where
680 (I64# x) == (I64# y) = x `eqInt64#` y
681 (I64# x) /= (I64# y) = x `neInt64#` y
683 instance Ord Int64 where
684 compare (I64# x) (I64# y) = compareInt64# x y
685 (<) (I64# x) (I64# y) = x `ltInt64#` y
686 (<=) (I64# x) (I64# y) = x `leInt64#` y
687 (>=) (I64# x) (I64# y) = x `geInt64#` y
688 (>) (I64# x) (I64# y) = x `gtInt64#` y
689 max x@(I64# x#) y@(I64# y#) =
690 case (compareInt64# x# y#) of { LT -> y ; EQ -> x ; GT -> x }
691 min x@(I64# x#) y@(I64# y#) =
692 case (compareInt64# x# y#) of { LT -> x ; EQ -> x ; GT -> y }
694 instance Num Int64 where
695 (I64# x) + (I64# y) = I64# (x `plusInt64#` y)
696 (I64# x) - (I64# y) = I64# (x `minusInt64#` y)
697 (I64# x) * (I64# y) = I64# (x `timesInt64#` y)
698 negate (I64# x) = I64# (negateInt64# x)
701 fromInteger i = integerToInt64 i
703 compareInt64# :: Int64# -> Int64# -> Ordering
705 | i# `ltInt64#` j# = LT
706 | i# `eqInt64#` j# = EQ
709 instance Bounded Int64 where
710 minBound = integerToInt64 (-0x8000000000000000)
711 maxBound = integerToInt64 0x7fffffffffffffff
713 instance Integral Int64 where
715 | x > 0 && y < 0 = quotInt64 (x-y-1) y
716 | x < 0 && y > 0 = quotInt64 (x-y+1) y
717 | otherwise = quotInt64 x y
719 quot x@(I64# _) y@(I64# y#)
720 | y# `neInt64#` (intToInt64# 0#) = x `quotInt64` y
721 | otherwise = divZeroError "quot{Int64}" x
723 rem x@(I64# _) y@(I64# y#)
724 | y# `neInt64#` (intToInt64# 0#) = x `remInt64` y
725 | otherwise = divZeroError "rem{Int64}" x
728 | x > 0 && y < 0 || x < 0 && y > 0 = if r/=0 then r+y else 0
730 where r = remInt64 x y
732 a@(I64# _) `quotRem` b@(I64# _) = (a `quotInt64` b, a `remInt64` b)
733 toInteger i = int64ToInteger i
735 remInt64, quotInt64 :: Int64 -> Int64 -> Int64
736 remInt64 (I64# x) (I64# y) = I64# (x `remInt64#` y)
737 quotInt64 (I64# x) (I64# y) = I64# (x `quotInt64#` y)
739 intToInt64 (I# i#) = I64# (intToInt64# i#)
740 int64ToInt (I64# i#) = I# (int64ToInt# i#)
742 -- Int64# primop wrappers:
744 ltInt64# :: Int64# -> Int64# -> Bool
745 ltInt64# x# y# = stg_ltInt64 x# y# /=# 0#
747 leInt64# :: Int64# -> Int64# -> Bool
748 leInt64# x# y# = stg_leInt64 x# y# /=# 0#
750 eqInt64# :: Int64# -> Int64# -> Bool
751 eqInt64# x# y# = stg_eqInt64 x# y# /=# 0#
753 neInt64# :: Int64# -> Int64# -> Bool
754 neInt64# x# y# = stg_neInt64 x# y# /=# 0#
756 geInt64# :: Int64# -> Int64# -> Bool
757 geInt64# x# y# = stg_geInt64 x# y# /=# 0#
759 gtInt64# :: Int64# -> Int64# -> Bool
760 gtInt64# x# y# = stg_gtInt64 x# y# /=# 0#
762 foreign import "stg_intToInt64" unsafe intToInt64# :: Int# -> Int64#
763 foreign import "stg_int64ToInt" unsafe int64ToInt# :: Int64# -> Int#
764 foreign import "stg_negateInt64" unsafe negateInt64# :: Int64# -> Int64#
765 foreign import "stg_remInt64" unsafe remInt64# :: Int64# -> Int64# -> Int64#
766 foreign import "stg_quotInt64" unsafe quotInt64# :: Int64# -> Int64# -> Int64#
767 foreign import "stg_timesInt64" unsafe timesInt64# :: Int64# -> Int64# -> Int64#
768 foreign import "stg_minusInt64" unsafe minusInt64# :: Int64# -> Int64# -> Int64#
769 foreign import "stg_plusInt64" unsafe plusInt64# :: Int64# -> Int64# -> Int64#
770 foreign import "stg_gtInt64" unsafe stg_gtInt64 :: Int64# -> Int64# -> Int#
771 foreign import "stg_geInt64" unsafe stg_geInt64 :: Int64# -> Int64# -> Int#
772 foreign import "stg_neInt64" unsafe stg_neInt64 :: Int64# -> Int64# -> Int#
773 foreign import "stg_eqInt64" unsafe stg_eqInt64 :: Int64# -> Int64# -> Int#
774 foreign import "stg_leInt64" unsafe stg_leInt64 :: Int64# -> Int64# -> Int#
775 foreign import "stg_ltInt64" unsafe stg_ltInt64 :: Int64# -> Int64# -> Int#
780 -- Code that's independent of Int64 rep.
782 instance CCallable Int64
783 instance CReturnable Int64
785 instance Enum Int64 where
787 | i == maxBound = succError "Int64"
791 | i == minBound = predError "Int64"
794 toEnum i = intToInt64 i
796 | x >= intToInt64 (minBound::Int) && x <= intToInt64 (maxBound::Int)
799 = fromEnumError "Int64" x
801 enumFrom e1 = map integerToInt64 [int64ToInteger e1 .. int64ToInteger (maxBound::Int64)]
802 enumFromTo e1 e2 = map integerToInt64 [int64ToInteger e1 .. int64ToInteger e2]
803 enumFromThen e1 e2 = map integerToInt64 [int64ToInteger e1, int64ToInteger e2 .. int64ToInteger last]
808 | otherwise = maxBound
810 enumFromThenTo e1 e2 e3 = map integerToInt64 [int64ToInteger e1, int64ToInteger e2 .. int64ToInteger e3]
812 instance Show Int64 where
813 showsPrec p i64 = showsPrec p (int64ToInteger i64)
815 instance Read Int64 where
816 readsPrec _ s = [ (integerToInt64 x,r) | (x,r) <- readDec s ]
818 instance Ix Int64 where
821 | inRange b i = int64ToInt (i-m)
822 | otherwise = indexError b i "Int64"
823 inRange (m,n) i = m <= i && i <= n
825 instance Real Int64 where
826 toRational x = toInteger x % 1
828 #if WORD_SIZE_IN_BYTES == 8
829 instance Bits Int64 where
830 (I64# x) .&. (I64# y) = I64# (word2Int# ((int2Word# x) `and#` (int2Word# y)))
831 (I64# x) .|. (I64# y) = I64# (word2Int# ((int2Word# x) `or#` (int2Word# y)))
832 (I64# x) `xor` (I64# y) = I64# (word2Int# ((int2Word# x) `xor#` (int2Word# y)))
833 complement (I64# x) = I64# (negateInt# x)
834 shift (I64# x) i@(I# i#)
835 | i > 0 = I64# (iShiftL# x i#)
836 | otherwise = I64# (iShiftRA# x (negateInt# i#))
837 i64@(I64# x) `rotate` (I# i)
840 -- ( (x<<i') | ((x&(0x10000000000000000-2^i2))>>i2) )
842 (int2Word# (iShiftL# x i'))
844 (int2Word# (iShiftRA# (word2Int# (
847 (int2Word# (maxBound# -# pow2# i2 +# 1#))))
849 | otherwise = rotate i64 (I# (64# +# i))
851 i' = word2Int# (int2Word# i `and#` int2Word# 63#)
853 (I64# maxBound#) = maxBound
857 #else /* WORD_SIZE_IN_BYTES != 8 */
859 instance Bits Int64 where
860 (I64# x) .&. (I64# y) = I64# (word64ToInt64# ((int64ToWord64# x) `and64#` (int64ToWord64# y)))
861 (I64# x) .|. (I64# y) = I64# (word64ToInt64# ((int64ToWord64# x) `or64#` (int64ToWord64# y)))
862 (I64# x) `xor` (I64# y) = I64# (word64ToInt64# ((int64ToWord64# x) `xor64#` (int64ToWord64# y)))
863 complement (I64# x) = I64# (negateInt64# x)
864 shift (I64# x) i@(I# i#)
865 | i > 0 = I64# (iShiftL64# x i#)
866 | otherwise = I64# (iShiftRA64# x (negateInt# i#))
867 i64@(I64# x) `rotate` (I# i)
870 -- ( (x<<i') | ((x&(0x10000000000000000-2^i2))>>i2) )
871 I64# (word64ToInt64# (
872 (int64ToWord64# (iShiftL64# x i')) `or64#`
873 (int64ToWord64# (iShiftRA64# (word64ToInt64# ((int64ToWord64# x) `and64#`
874 (int64ToWord64# (maxBound# `minusInt64#` (pow2_64# i2 `plusInt64#` (intToInt64# 1#))))))
876 | otherwise = rotate i64 (I# (64# +# i))
878 i' = word2Int# (int2Word# i `and#` int2Word# 63#)
880 (I64# maxBound#) = maxBound
884 foreign import "stg_not64" unsafe not64# :: Word64# -> Word64#
885 foreign import "stg_xor64" unsafe xor64# :: Word64# -> Word64# -> Word64#
886 foreign import "stg_or64" unsafe or64# :: Word64# -> Word64# -> Word64#
887 foreign import "stg_and64" unsafe and64# :: Word64# -> Word64# -> Word64#
888 foreign import "stg_shiftRL64" unsafe shiftRL64# :: Word64# -> Int# -> Word64#
889 foreign import "stg_iShiftRA64" unsafe iShiftRA64# :: Int64# -> Int# -> Int64#
890 foreign import "stg_iShiftRL64" unsafe iShiftRL64# :: Int64# -> Int# -> Int64#
891 foreign import "stg_iShiftL64" unsafe iShiftL64# :: Int64# -> Int# -> Int64#
892 foreign import "stg_shiftL64" unsafe shiftL64# :: Word64# -> Int# -> Word64#
896 -- ---------------------------------------------------------------------------
897 -- Miscellaneous Utilities
898 -- ---------------------------------------------------------------------------
900 absReal :: (Ord a, Num a) => a -> a
901 absReal x | x >= 0 = x
904 signumReal :: (Ord a, Num a) => a -> a
905 signumReal x | x == 0 = 0