I found that the problem is the function vfnprint () located in
vfnprintf.cxx. It calls cvt() and this function calls modf(). This last
function seems to be the problem. This is the code extracted from cvt() :
...
for (p = endp - 1; integer; ++expcnt) {
tmp = modf(integer / 10, &integer);
*p-- = to_char((int)((tmp + .01) * 10));
}
...
This loop never ends!
Am I omiting any patch? Please I need help. If you have any suggestion
write me as soon as you can.
Regards,
Eduardo
-------- Mensaje original --------
Asunto: [ECOS] printf and floating point emulation
Fecha: Tue, 08 Apr 2008 16:55:09 -0300
De: Eduardo Sabaj <[EMAIL PROTECTED]>
Para: [email protected]
I have a program that hangs when trying to format and print something
like this:
void
func (float f)
{
printf ("%.2f\n", f);
}
I don't have an FPU builtin hardware.
The CPPFLAGS and LDFLAGS include the following options:
-msoft-float -mno-fp-ret-in-387 -mno-fancy-math-387
I disabled the FPU support (macro CYGHWR_HAL_I386_FPU) and I enabled
CYGSEM_LIBC_STDIO_PRINTF_FLOATING_POINT and
CYGSEM_LIBC_STDIO_SCANF_FLOATING_POINT macros.
I'm running ecos-2.0 (the last version available in CVS).
Please, I cannot realize what I'm omiting.. Any idea?
--
Ing. Eduardo Salvador Sabaj
Analista de Desarrollo
Compañía Hasar | Grupo Hasar*
*Marcos Sastre y José Ingenieros
El Talar. Pacheco
[B1618CSD] Buenos Aires. Argentina
Tel [54 11] 4117 8900 | Fax [54 11] 4117 8998
E-mail: [EMAIL PROTECTED]
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