# // constfold_error.d at line 575 (on WinXP with dmd v0.121)
# // Bug1: abnormal program termination
# // Bug2: overflow 1.17549e-38+1.17549e-38i > 3.40282e+38+3.40282e+38i
# //
# // Note: This mainly appears to be a bug comparing '>' (greater-than)
# //       only against the complex float constant .max
# //       (bug1: cfloat.min > cfloat.max, bug2: cf > cfloat.max)
# private import std.stdio;
#
# int main()
# {
#     //cfloat  cf = cfloat.min;
#     //cdouble cd = cdouble.min;
#     //creal   cr = creal.min;
#
#     if (cfloat.min > cfloat.max) // <-- Look at output 1
#     //if (cfloat.min.re > cfloat.max.re &&
#     //    cfloat.min.im > cfloat.max.im)   // ok
#     //if (cf == cfloat.max)      // <-- Look at output 2
#         goto Loverflow;
#
#     return 0;
#
#     Loverflow:
#        writefln("overflow %g > %g", cfloat.min, cfloat.max);
#        //writefln("overflow %g > %g", cf, cfloat.max);
#        return 1;
# }

* All of the complex float (cfloat, cdouble, and creal) constants compares of .min > .max fail. (ex: cfloat.min > cfloat.max)

Output 1:
---------
C:\dmd>dmd constfold_error.d
Assertion failure: '0' on line 575 in file 'constfold.c'

abnormal program termination

C:\dmd>
------------------

* All of the complex float (cfloat, cdouble, and creal) .max constants when compared against a complex float variable set to .min of that datatype, return that .min is '>' .max. (ex: cf=cfloat.min; cf > cfloat.max)

Output 2: How can cfloat.min be > cfloat.max;
---------
C:\dmd>dmd constfold_error.d
C:\dmd\bin\..\..\dm\bin\link.exe constfold_error,,,user32+kernel32/noi;

C:\dmd>constfold_error
overflow 1.17549e-38+1.17549e-38i > 3.40282e+38+3.40282e+38i

C:\dmd>

David L.

-------------------------------------------------------------------
"Dare to reach for the Stars...Dare to Dream, Build, and Achieve!"
-------------------------------------------------------------------

MKoD: http://spottedtiger.tripod.com/D_Language/D_Main_XP.html

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David L  Davis schrieb am Sat, 23 Apr 2005 12:18:31 +0000 (UTC):
> # // constfold_error.d at line 575 (on WinXP with dmd v0.121)
> # // Bug1: abnormal program termination
> # // Bug2: overflow 1.17549e-38+1.17549e-38i > 3.40282e+38+3.40282e+38i
> # //
> # // Note: This mainly appears to be a bug comparing '>' (greater-than)
> # //       only against the complex float constant .max
> # //       (bug1: cfloat.min > cfloat.max, bug2: cf > cfloat.max)
> # private import std.stdio;
> #
> # int main()
> # {
> #     //cfloat  cf = cfloat.min;
> #     //cdouble cd = cdouble.min;
> #     //creal   cr = creal.min;
> #
> #     if (cfloat.min > cfloat.max) // <-- Look at output 1
> #     //if (cfloat.min.re > cfloat.max.re &&
> #     //    cfloat.min.im > cfloat.max.im)   // ok
> #     //if (cf == cfloat.max)      // <-- Look at output 2
> #         goto Loverflow;
> #
> #     return 0;
> #
> #     Loverflow:
> #        writefln("overflow %g > %g", cfloat.min, cfloat.max);
> #        //writefln("overflow %g > %g", cf, cfloat.max);
> #        return 1;
> # }
>
> * All of the complex float (cfloat, cdouble, and creal) constants compares of .min > .max fail. (ex: cfloat.min > cfloat.max)
>
> Output 1:
> ---------
> C:\dmd>dmd constfold_error.d
> Assertion failure: '0' on line 575 in file 'constfold.c'
>
> abnormal program termination
>
> C:\dmd>
> ------------------
>
> * All of the complex float (cfloat, cdouble, and creal) .max constants when compared against a complex float variable set to .min of that datatype, return that .min is '>' .max. (ex: cf=cfloat.min; cf > cfloat.max)
>
> Output 2: How can cfloat.min be > cfloat.max;
> ---------
> C:\dmd>dmd constfold_error.d
> C:\dmd\bin\..\..\dm\bin\link.exe constfold_error,,,user32+kernel32/noi;
>
> C:\dmd>constfold_error
> overflow 1.17549e-38+1.17549e-38i > 3.40282e+38+3.40282e+38i

Added to DStress as http://dstress.kuehne.cn/run/bug_constfold_575_A.d http://dstress.kuehne.cn/run/bug_constfold_575_B.d http://dstress.kuehne.cn/run/bug_constfold_575_C.d http://dstress.kuehne.cn/run/bug_constfold_575_D.d http://dstress.kuehne.cn/run/bug_constfold_575_E.d http://dstress.kuehne.cn/run/bug_constfold_575_F.d http://dstress.kuehne.cn/run/bug_constfold_575_G.d http://dstress.kuehne.cn/run/bug_constfold_575_H.d http://dstress.kuehne.cn/run/bug_constfold_575_I.d http://dstress.kuehne.cn/run/bug_constfold_575_J.d http://dstress.kuehne.cn/run/bug_constfold_575_K.d http://dstress.kuehne.cn/run/bug_constfold_575_L.d http://dstress.kuehne.cn/run/bug_constfold_575_M.d http://dstress.kuehne.cn/run/bug_constfold_575_N.d http://dstress.kuehne.cn/run/bug_constfold_575_O.d http://dstress.kuehne.cn/run/bug_constfold_575_P.d http://dstress.kuehne.cn/run/bug_constfold_575_Q.d http://dstress.kuehne.cn/run/bug_constfold_575_R.d

Thomas


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The trouble is that <, <=, >, >= comparisons are not defined for complex operands. I've fixed the compiler to now issue the appropriate error message.

In article <d58tbl$da5$1@digitaldaemon.com>, Walter says...
>
>The trouble is that <, <=, >, >= comparisons are not defined for complex operands. I've fixed the compiler to now issue the appropriate error message.
>
>

Walter, thanks for checking into this! :)

By complex operands, you must mean just the cfloat, cdouble, and creal...right?

David L.

-------------------------------------------------------------------
"Dare to reach for the Stars...Dare to Dream, Build, and Achieve!"
-------------------------------------------------------------------

MKoD: http://spottedtiger.tripod.com/D_Language/D_Main_XP.html

"David L. Davis" <SpottedTiger@yahoo.com> wrote in message news:d5ath8$2bkk$1@digitaldaemon.com...
> In article <d58tbl$da5$1@digitaldaemon.com>, Walter says...
> >
> >The trouble is that <, <=, >, >= comparisons are not defined for complex operands. I've fixed the compiler to now issue the appropriate error message.
> >
> >
>
> Walter, thanks for checking into this! :)
>
> By complex operands, you must mean just the cfloat, cdouble, and
creal...right?

Right.