On 26/7/19 9:20 PM, Jan Mercl wrote: > In a program that generates C, I'm using big.Float.Text > (https://golang.org/pkg/math/big/#Float.Text) to produce the exact > value of the C floating point literal. As it turns out, the function > does not support Inf values. Instead of encoding the exact bits of the > Inf value, the resulting string is simply "Inf". > > I'm looking for possibly existing, open source Go code that does the > conversion properly both for C floats (Go float32) and C doubles (Go > float64). So far I was not able to find anything. I can surely roll my > own code, but I'd very much like to use a well tested code if someone > can point me to such. > > TIA
Section 7.12.4 of the C99 standard says that <math.h> defines the *INFINITY* macro to represent positive infinity, and the way it's defined in the standard suggests that negative infinity can be represented by simply negating that constant. Doing it this way works portably across all standard C compilers and architectures. Is there a reason you can't simply post-process Text() output to replace "Inf" with "INFINITY"? That's just a simple "if" test. -- Best Regards, Adrian -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/b6efb830-e465-fe37-8be4-27233e27d60f%4003s.net.
