From Newsgroup: comp.lang.tcl

i am surprised that Tcl 9 clock command doesn't support 64 bit integer.

is there a way to support it? or i am doing something wrong below?


(bin) 1 % info patch
9.0.3
(bin) 2 % parray tcl_platform
tcl_platform(byteOrder) = littleEndian
tcl_platform(engine) = Tcl
tcl_platform(machine) = amd64
tcl_platform(os) = Windows NT
tcl_platform(osVersion) = 10.0
tcl_platform(pathSeparator) = ;
tcl_platform(platform) = windows
tcl_platform(pointerSize) = 8
tcl_platform(user) = x
tcl_platform(wordSize) = 4
(bin) 3 % expr 2 **31
2147483648
(bin) 4 % clock format 2147483648 -gmt 1
Tue Jan 19 03:14:08 GMT 2038
(bin) 5 % expr 2 ** 63
9223372036854775808
(bin) 6 % clock format 9223372036854775808 -gmt 1
integer value too large to represent
(bin) 7 %
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From Newsgroup: comp.lang.tcl

Am 14.01.26 um 02:33 schrieb wwaii:

i am surprised that Tcl 9 clock command doesn't support 64 bit integer.

is there a way to support it? or i am doing something wrong below?

(bin) 3 % expr 2 **31
2147483648
(bin) 4 % clock format 2147483648 -gmt 1
Tue Jan 19 03:14:08 GMT 2038
(bin) 5 % expr 2 ** 63
9223372036854775808
(bin) 6 % clock format 9223372036854775808 -gmt 1
integer value too large to represent
(bin) 7 %

It does support values beyond 32 bit:

(Pass) 50 % expr 2 ** 35
34359738368
(Pass) 51 % clock format 34359738368 -gmt 1
Tue Oct 26 03:46:08 GMT 3058
(Pass) 52 %

the value you chose is just insanely large, I guess that the year
overflows the 64 bit for display. I'm not sure that we will use Tcl
still in 292 Billion years ;)

Christian
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From Newsgroup: comp.lang.tcl

Am 14.01.2026 um 02:33 schrieb wwaii:

i am surprised that Tcl 9 clock command doesn't support 64 bit integer.

is there a way to support it? or i am doing something wrong below?

(bin) 1 % info patch
9.0.3
(bin) 2 % parray tcl_platform
tcl_platform(byteOrder)-a-a-a-a = littleEndian tcl_platform(engine)-a-a-a-a-a-a-a = Tcl
tcl_platform(machine)-a-a-a-a-a-a = amd64 tcl_platform(os)-a-a-a-a-a-a-a-a-a-a-a = Windows NT tcl_platform(osVersion)-a-a-a-a = 10.0
tcl_platform(pathSeparator) = ;
tcl_platform(platform)-a-a-a-a-a = windows
tcl_platform(pointerSize)-a-a = 8
tcl_platform(user)-a-a-a-a-a-a-a-a-a = x
tcl_platform(wordSize)-a-a-a-a-a = 4
(bin) 3 % expr 2 **31
2147483648
(bin) 4 % clock format 2147483648 -gmt 1
Tue Jan 19 03:14:08 GMT 2038
(bin) 5 % expr 2 ** 63
9223372036854775808
(bin) 6 % clock format 9223372036854775808 -gmt 1
integer value too large to represent
(bin) 7 %

Sergey may comment on this.

It is somewhere between 32 and 64 bit.

% set t [expr {2 ** 63 / 1000}]
9223372036854775
% clock format $t -gmt 1
Sun Aug 17 07:12:55 GMT 292278994

I agree, that this year is quite theoretical.

Also remark, that it also looks back with negative values.
At some moment, there is an overflow.

Harald



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