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Morning, as we just discussed on IRC, strtod("0x0a") is supposed to return 0 according to the man page, but it does return 1.25. This manifests itself in breaking Perl for example, # perl -e 'print "0x0a"+0,"\n";' 1.25
I've verified it's indeed a glibc problem, and still present in dist-6.2 #include <stdlib.h> main() { double a=strtod("0x0a", NULL); printf("%f\n", a); }
Well, ISO C99 specifies that: [#5] If the subject sequence has the hexadecimal form and FLT_RADIX is a power of 2, the value resulting from the conversion is correctly rounded. 7.20.1.3 Library 7.20.1.3 In binary notation, 0x0A = 1010 = 1.25 (for FLT_RADIX=2, whcih is the default) Not a bug, just what the standard mandates.