[MacRuby-devel] Strange NSDate behavior building 32 bit v 64 bit (Richard Sepulveda)

[Richard Sepulveda]

Here is an update on what is going on with the NSDate issues.

i have been working with 3 version's of MacRuby.

MacRuby 0.7 with Vincent's first suggested modification (commenting out the NSDate clause in objc.m (This 
essentially makes MacRuby use a real NSDate object instead of converting it into a Ruby Time object)

MacRuby 0.8 with no changes

MacRuby 0.9  with Vincent's NSDate changes. (He fixes the NSDate/Ruby Time object)

The test code:

NSLog( "In rb_main.rb")

i = 1296445544
NSLog( "i = %d class = %s" % [i, i.class.to_s])

f = 1296445544.0
NSLog( "f = %f class = %@ DIG = %d" % [ f, f.class, Float::DIG.to_s])

if i == f
  NSLog(  "Is equal")
else
  NSLog(  "Not equal")
end

time = Time.new
NSLog(  "time = %s" % [time.to_s])
NSLog(  "time to_i = %d" % [time.to_i])
NSLog(  "time to_f = %f" % [time.to_f])

nsdate = NSDate.date
NSLog( "nsdate = %s" % [nsdate.description])

i = nsdate.timeIntervalSinceReferenceDate.to_i
f = nsdate.timeIntervalSinceReferenceDate.to_f
NSLog( "nsdate to_i = %d" % [i])
NSLog( "nsdate to_f = %f" % [f])

Summary (all tests were run in 32 bit mode):  I can provide the output if you wish to see it.

MacRuby 0.7
- NSDate is fixed, Can also do calculations with the date like adding 60 seconds,etc.
- Ruby Time - date is correct, to_i is correct, to_f is incorrect
- Bignum.to_i is correct, Bignum.to_f is wrong

MacRuby 0.8
- NSDate is broken - wrong time, wrong to_i, wrong to_f
- Ruby Time - date is correct, to_i is correct, to_f is incorrect
- Bignum.to_i is correct, Bignum.to_f is wrong

MacRuby 0.9
- NSDate is somewhat fixed. It returns the correct time, but fails when doing calculations with that date
- Ruby Time - date is correct, to_i is correct, to_f is incorrect
- Bignum.to_i is correct, Bignum.to_f is wrong

My conclusions, 
- 0.7 and 0.9 fix return the correct time now, 0.9 fix can't do necessary time arithmetic
- Ruby Time.to_f is broken in all 3 versions
- Bignum.to_f is broken in all 3 versions
- I believe the to_f method is behind all of these problems but i haven't had time to find the problem nor
a solution.

* Late breaking news, I was running my real app with the modified 0.7 version and when i attempted 
to 'play' an NSSound, the application exited with a return code 45?? I am not sure what this means.
I will try to create a test case for this later on.
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