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misc: fix strtod_nol_err tests

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A better way of implementing the string to double
conversion and a better way of testing it.

Signed-off-by: Craig Small <csmall@enc.com.au>
This commit is contained in:
Dr. Werner Fink
2016-07-13 20:08:51 +10:00
committed by Craig Small
parent 100afbc149
commit 4ed44ab58e
4 changed files with 20 additions and 18 deletions
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22
lib/strutils.c
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@ -20,6 +20,8 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <float.h>
#include <math.h>
#include <stdlib.h>
#include <ctype.h>
@ -71,9 +73,9 @@ double strtod_or_err(const char *str, const char *errmesg)
*/
double strtod_nol_or_err(char *str, const char *errmesg)
{
double num;
long double num;
const char *cp, *radix;
double mult;
long double mult;
int negative = 0;
if (str != NULL && *str != '\0') {
@ -95,29 +97,29 @@ double strtod_nol_or_err(char *str, const char *errmesg)
mult=0.1;
while(isdigit(*radix)) {
radix++;
mult *= 10;
mult *= 10.0;
}
while(isdigit(*cp)) {
num += (*cp - '0') * mult;
mult /= 10;
num += (long double)(*cp - '0') * mult;
mult /= 10.0;
cp++;
}
/* got the integers */
if (*cp == '\0')
return (negative?-num:num);
return (double)(negative?-num:num);
if (*cp != '.' && *cp != ',')
error(EXIT_FAILURE, EINVAL, "%s: '%s'", errmesg, str);
cp++;
mult = 0.1;
while(isdigit(*cp)) {
num += (*cp - '0') * mult;
mult /= 10;
num += (long double)(*cp - '0') * mult;
mult /= 10.0;
cp++;
}
if (*cp == '\0')
return (negative?-num:num);
return (double)(negative?-num:num);
}
error(EXIT_FAILURE, errno, "%s: '%s'", errmesg, str);
return 0;
return (double)0;
}