jyapayne/Nim
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

JS: Corrected shift operators. Made casting between ints behave like C does.

Browse source
This commit is contained in:
Yuriy Glukhov 2016-01-22 18:30:07 +02:00
commit d2ecd84f67
4 changed files with 86 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

39
tests/misc/tints.nim
View file

@ -23,24 +23,29 @@ template test(opr, a, b, c: expr): stmt {.immediate.} =
test(`+`, 12'i8, -13'i16, -1'i16)
test(`shl`, 0b11, 0b100, 0b110000)
test(`shl`, 0b11'i32, 0b100'i64, 0b110000'i64)
when not defined(js):
test(`shl`, 0b11'i32, 0b100'i64, 0b110000'i64)
test(`shl`, 0b11'i32, 0b100'i32, 0b110000'i32)
test(`or`, 0xf0f0'i16, 0x0d0d'i16, 0xfdfd'i16)
test(`and`, 0xf0f0'i16, 0xfdfd'i16, 0xf0f0'i16)
test(`shr`, 0xffffffffffffffff'i64, 0x4'i64, 0x0fffffffffffffff'i64)
when not defined(js):
test(`shr`, 0xffffffffffffffff'i64, 0x4'i64, 0x0fffffffffffffff'i64)
test(`shr`, 0xffff'i16, 0x4'i16, 0x0fff'i16)
test(`shr`, 0xff'i8, 0x4'i8, 0x0f'i8)
test(`shr`, 0xffffffff'i64, 0x4'i64, 0x0fffffff'i64)
when not defined(js):
test(`shr`, 0xffffffff'i64, 0x4'i64, 0x0fffffff'i64)
test(`shr`, 0xffffffff'i32, 0x4'i32, 0x0fffffff'i32)
test(`shl`, 0xffffffffffffffff'i64, 0x4'i64, 0xfffffffffffffff0'i64)
when not defined(js):
test(`shl`, 0xffffffffffffffff'i64, 0x4'i64, 0xfffffffffffffff0'i64)
test(`shl`, 0xffff'i16, 0x4'i16, 0xfff0'i16)
test(`shl`, 0xff'i8, 0x4'i8, 0xf0'i8)
test(`shl`, 0xffffffff'i64, 0x4'i64, 0xffffffff0'i64)
when not defined(js):
test(`shl`, 0xffffffff'i64, 0x4'i64, 0xffffffff0'i64)
test(`shl`, 0xffffffff'i32, 0x4'i32, 0xfffffff0'i32)
# bug #916
@ -50,5 +55,27 @@ proc unc(a: float): float =
echo int(unc(0.5)), " ", int(unc(-0.5))
echo int(0.5), " ", int(-0.5)
echo("Success") #OUT Success
block: # Casts to uint
template testCast(fromValue: typed, toType: typed, expectedResult: typed) =
let src = fromValue
let dst = cast[toType](src)
if dst != expectedResult:
echo "Casting ", astToStr(fromValue), " to ", astToStr(toType), " = ", dst.int, " instead of ", astToStr(expectedResult)
doAssert(dst == expectedResult)
testCast(-1'i16, uint16, 0xffff'u16)
testCast(0xffff'u16, int16, -1'i16)
testCast(0xff'u16, uint8, 0xff'u8)
testCast(0xffff'u16, uint8, 0xff'u8)
testCast(-1'i16, uint32, 0xffffffff'u32)
testCast(0xffffffff'u32, int32, -1)
testCast(0xfffffffe'u32, int32, -2'i32)
testCast(0xffffff'u32, int16, -1'i32)
testCast(-5'i32, uint8, 251'u8)
echo("Success") #OUT Success