On Thu, Mar 26, 2009 at 11:41 AM, Greg Chicares <gchica...@sbcglobal.net> wrote:
> On 2009-03-26 16:27Z, Gregg Reynolds wrote:
> [...]
>> #define strtold(a,b) ((long double)strtod((a),(b)))
>>
>> make check fails on
>>
>> tchtest write casket 50000 5000 5 5
>
> Does that test depend on accurate long-double i/o,
> which the strtod() kludge sacrifices?
>
It uses it, but I don't know if it actually needs the long double. I
suppose it does, considering it's part of a test suite. ;)
Here's the code that uses strtold:
/* Convert a string with a metric prefix to an integer. */
int64_t tcatoix(const char *str){
assert(str);
char *end;
#define strtold(a,b) ((long double)strtod((a),(b))) /*gar*/
long double val = strtold(str, &end);
int inf = isinf(val);
if(inf != 0) return inf > 0 ? INT64_MAX : INT64_MIN;
if(!isnormal(val)) return 0;
if(*end == 'k' || *end == 'K'){
val *= 1LL << 10;
} else if(*end == 'm' || *end == 'M'){
val *= 1LL << 20;
} else if(*end == 'g' || *end == 'G'){
val *= 1LL << 30;
} else if(*end == 't' || *end == 'T'){
val *= 1LL << 40;
} else if(*end == 'p' || *end == 'P'){
val *= 1LL << 50;
} else if(*end == 'e' || *end == 'E'){
val *= 1LL << 60;
}
if(val > INT64_MAX) return INT64_MAX;
if(val < INT64_MIN) return INT64_MIN;
return val;
}
It looks to me like that should work, but then again it's been a while
since I dug into serious code. I'm not even sure how isinf is
supposed to work.
Thanks,
gregg
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