Re: strtod.c compilation failure on i386/Solaris 10

[Eric Blake]

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According to Jim Meyering on 4/12/2008 6:40 AM:
| Thanks for the quick reply (yes, I owe you at least one ;-).
|
| These are from gcc, so I looked in gcc's own extend.texi
| and saw that they are functions.  Here are examples that compile:
|
|   double d = __builtin_huge_val();
|   double e = __builtin_nan("0x0");

Aha.  Solaris 10 has a buggy math.h - it defines NAN and HUGE_VAL
incorrectly (to the value of the builtin function address, and not the
result of calling the function), which totally explains the compiler error
message.  Actually, __builtin_nan(NULL) and __builtin_nan("") should
compile as well; __builtin_nan() maps to POSIX nan() (not yet provided by
gnulib), which POSIX specifies behaves as:

nan(NULL) => strtod("NAN",NULL)
nan("") => strtod("NAN()",NULL)
nan("0x0") => strtod("NAN(0x0)",NULL)

Now that we know the problem, I'll try and start hacking together a
math.in.h fix.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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