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Re^3: [C Question] Determine if gcc provides erfl() functionby RichardK (Parson) |
on May 29, 2015 at 09:26 UTC ( [id://1128245]=note: print w/replies, xml ) | Need Help?? |
The man page for feature_test_macros has lots of details on how to use these, and the info page has even more. But the easiest way is to set the compiler command line option -std=c99 to ensure that everything (compiler/libc) complies with the C99 standard.
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