Re: lib/49429: Import strtonum(3)

["Kamil Rytarowski" <n54%gmx.com@localhost>]

The following reply was made to PR lib/49429; it has been noted by GNATS.

From: "Kamil Rytarowski" <n54%gmx.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: christos%netbsd.org@localhost
Subject: Re: lib/49429: Import strtonum(3)
Date: Sat, 27 Dec 2014 02:44:15 +0100

 >  4) do we really want ENOSUP this way?
 
 strtoi(3)/strtou(3) will not work when someone might want to have code similar to this common idiom:
 
 /* strtod example */
 #include <stdio.h>      /* printf, NULL */
 #include <stdlib.h>     /* strtod */
 
 int main ()
 {
   char szOrbits[] = "365.24 29.53";
   char* pEnd;
   double d1, d2;
   d1 = strtod (szOrbits, &pEnd);
   d2 = strtod (pEnd, NULL);
   printf ("The moon completes %.2f orbits per Earth year.\n", d1/d2);
   return 0;
 }
 
 http://www.cplusplus.com/reference/cstdlib/strtod/
 
 I suggest that we will promote strtol(3)-like functions usage for checking for partial conversions.
 
 >  5) if base is not supported then we can unexpectedly abuse errno from EINVAL  and change return value from 0 to lo/hi
 
 abuse errno and change it from EINVAL to ERANGE*