[patch, libgfortran] PR111022 ES0.0E0 format gave ES0.dE0 output with d too high.

[Jerry D]

On 1/30/24 12:36 PM, Harald Anlauf wrote:
> Hi Jerry,
> 
> Am 30.01.24 um 19:15 schrieb Jerry D:
>> The attached patch attempts to fix the handling of the EN0.0E0 and
>> ES0.0E0 formatting by correctly calculating the number of digits needed
>> for the exponents and building those exponents into the float string.
> 
> while your patch addresses ENw.dE0 and ESw.dE0 formatting,
> it does not fix Ew.dE0, which can be seen with the following test:
> 
>    write(buffer,"(E0.3E0)") .6660_4
>    print *, buffer
>    write(buffer,"(E0.3)") .6660_4
>    print *, buffer
> 
> I get even with your patch:
> 
>   0.666
>   0.666
> 
> but would have expected:
> 
>   0.666E+0   ! F2018 & F2023, table 13.1
>   0.666E+0   ! F2023, table 13.1
> 

An updated patch is attached and gives the expected result.

$ gfc example.f90
$ ./a.out
  0.666E+0
  0.666E+0

I will update the commit log and test cases and re-submit for approval.

Regards,

Jerry
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