Hello Michael,
About Debian Bug #756599 [1], I found this explanation [2][3] confirming
that * is not a selector :
strtod recognizes four special input strings. The strings "inf" and
"infinity" are converted to ∞, or to the largest representable
value if the floating-point format doesn’t support infinities. You can
prepend a "+" or "-" to specify the sign. Case is ignored when scanning
these strings.
The strings "nan" and "nan(chars…)" are converted to NaN. Again, case is
ignored. If chars… are provided, they are used in some unspecified
fashion to select a particular representation of NaN (there can be several).
Since zero is a valid result as well as the value returned on error, you
should check for errors in the same way as for strtol, by examining
errno and tailptr.
Regards,
[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=756599
[2]
https://www.gnu.org/software/libc/manual/html_node/Parsing-of-Floats.html
[3]
http://www.gnu.org/savannah-checkouts/gnu/libc/manual/html_node/Infinity-and-NaN.html
--
Stéphane Aulery
