Hi,

consider following program:

var
   c: currency;
begin
   c := 1;
   writeln(c,' ',Int64(c));
   readln;
end.

FPC 3.0.4
On Win32/x86 I get: 1, 1000 (what I am expecting) On Win64/x86_64 I get: 1, 1

Is is as expected ?

Is there safe way for both platforms how to get 1000 (beside that I can use: i: int64 absolute c;)

Thanks

-Laco.

Hi,
 
Linux 64-bit Lazarus 1.9.0 r57948M FPC 3.1.1 x86_64-linux-qt gives  
 1.000000000000000000E+00 10000
V.______________________________________________________________

Hi,

consider following program:

 var
   c: currency;
 begin
   c := 1;
   writeln(c,' ',Int64(c));
   readln;
 end.

FPC 3.0.4
On Win32/x86 I get: 1, 1000  (what I am expecting) On Win64/x86_64 I get: 1, 1

Is is as expected ?

Is there safe way for both platforms how to get 1000 (beside that I can use: i: int64 absolute c;)

Thanks

-Laco.

Linux 64-bit Lazarus 1.9.0 r57948M FPC 3.1.1 x86_64-linux-qt gives 1.000000000000000000E+00 10000

What is dissassembly for:
   i:=Int64(c);?

I have for Win32:
test_curr_int64.lpr:19 i1 := Int64(c);
0040158D a100c04200 mov 0x42c000,%eax 00401592 a310c04200 mov %eax,0x42c010 00401597 a104c04200 mov 0x42c004,%eax 0040159C a314c04200 mov %eax,0x42c014

and for Win64:
test_curr_int64.lpr:19 i1 := Int64(c); 00000001000015BD 488b0d3caa0300 mov 0x3aa3c(%rip),%rcx # 0x10003c000
00000001000015C4 48b84b598638d6c56d34 movabs $0x346dc5d63886594b,%rax 00000001000015CE 48f7e9 imul %rcx 00000001000015D1 48c1fa0b sar $0xb,%rdx 00000001000015D5 48c1e93f shr $0x3f,%rcx 00000001000015D9 4801ca add %rcx,%rdx 00000001000015DC 4889152daa0300 mov %rdx,0x3aa2d(%rip) # 0x10003c010

L.

Hi,
 
I have
unit1.pas:36                              i:=Int64(c); 000000000046EEE0 488b45e8                 mov    -0x18(%rbp),%rax 000000000046EEE4 488945e0                 mov    %rax,-0x20(%rbp) unit1.pas:38                              writeln(i); at Level0 andunit1.pas:36                              i:=Int64(c);000000000046EECD 4c8b2424                 mov    (%rsp),%r12unit1.pas:38                              writeln(i);at Level3.I just noticed that you wrote you are expecting 1000. You should expect 10000 since currency has four decimals.V.   ______________________________________________________________

 
Linux 64-bit Lazarus 1.9.0 r57948M FPC 3.1.1 x86_64-linux-qt gives  
 1.000000000000000000E+00 10000
What is dissassembly for:
  i:=Int64(c);?

I have for Win32:
test_curr_int64.lpr:19            i1 := Int64(c); 0040158D a100c04200               mov    0x42c000,%eax 00401592 a310c04200               mov    %eax,0x42c010 00401597 a104c04200               mov    0x42c004,%eax 0040159C a314c04200               mov    %eax,0x42c014

and for Win64:
test_curr_int64.lpr:19                    i1 := Int64(c); 00000001000015BD 488b0d3caa0300           mov    0x3aa3c(%rip),%rcx        # 0x10003c000 00000001000015C4 48b84b598638d6c56d34     movabs $0x346dc5d63886594b,%rax 00000001000015CE 48f7e9                   imul   %rcx 00000001000015D1 48c1fa0b                 sar    $0xb,%rdx 00000001000015D5 48c1e93f                 shr    $0x3f,%rcx 00000001000015D9 4801ca                   add    %rcx,%rdx 00000001000015DC 4889152daa0300           mov    %rdx,0x3aa2d(%rip)        # 0x10003c010

L.
______________________________________________________________

Hi,

consider following program:

 var
   c: currency;
 begin
   c := 1;
   writeln(c,' ',Int64(c));
   readln;
 end.

FPC 3.0.4
On Win32/x86 I get: 1, 1000  (what I am expecting) On Win64/x86_64 I get: 1, 1

Is is as expected ?

Is there safe way for both platforms how to get 1000 (beside that I can use: i: int64 absolute c;)

Thanks

-Laco.

Than you,

So we can clearly say, that x64_86 output is different on Linux and Windows64
It is at least strange from my POV because I would expect consistent results across platforms.

I just noticed that you wrote you are expecting 1000. You should expect 10000 since currency has four decimals.

Yes, it was typo. Of course I expect 10000

L.

Moreover:

var
   c: currency;
   i1: int64;
   i2: int64 absolute c;
begin
   c := 68719476736;
   i1 := Trunc(c*10000);
   writeln(c,', ',i1,', ',i2);
   readln;
end.

Win32 (as expected): 6.871947673600000000E+10, 687194767360000, 687194767360000
Win64 (wrong) : 6.871947673600000000E+10, 53550614319 , 687194767360000

L.

I have created bug report:
https://bugs.freepascal.org/view.php?id=33758

L.