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nolibc: format printf floats as double, not long double #177

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Merged
hannesm merged 1 commit into from
Jul 22, 2026
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nolibc: format printf floats as double, not long double #177

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7 changes: 5 additions & 2 deletions nolibc/vfprintf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -121,7 +121,10 @@ static const unsigned char states[]['z'-'A'+1] = {
union arg
{
uintmax_t i;
long double f;
/* double, not long double: avoids pulling libgcc soft-float (__extenddftf2,
__trunctfdf2) into freestanding links; %L is treated as double (fmt_fp
formats at double). */
double f;
void *p;
};

Expand Down Expand Up @@ -151,7 +154,7 @@ static void pop_arg(union arg *arg, int type, va_list *ap)
break; case UIPTR: arg->i = (uintptr_t)va_arg(*ap, void *);
#endif
break; case DBL: arg->f = va_arg(*ap, double);
break; case LDBL: arg->f = va_arg(*ap, long double);
break; case LDBL: arg->f = va_arg(*ap, double);
}
}

Expand Down