Hi, atof (and hence strtod) on hexadecimal numbers results in 0.0 (errno of 0). This may be related to an old issue where NaN isnt correctly parsed. I believe it isnt correct behaviour:
http://www.opengroup.org/onlinepubs/000095399/functions/atof.html I've tested it for integers in the range 0x8000000 to 0xFFFFFFFF. It works properly on ubuntu dapper, gcc 4.1 on i386; debian stable, gcc 3.3 on amd64 sunos ?, gcc 3.4 on sparc I'm using standard cygwin distribution, which uses gcc 3.4.4 (cygming special) Sample code: #include "limits.h" #include <iostream.h> #include "errno.h" int main() { cout << ULONG_MAX << endl; cout << 0xFFFFFFFF << endl; errno = 0; cout << atof("0xFFFFFFFF") << endl; cout << errno << endl; errno = 0; cout << strtod("0xFFFFFFFF", NULL) << endl; cout << errno << endl; } Is this being fixed? I could find a mention of it before. Does anyone know a simple workaround? Thanks Paul -- Paul Biggar [EMAIL PROTECTED] -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
