Re^3: maximum value of a scalar

I'm trying to compile for quadruple floats

What is your compiler's C data type for these "quadruple floats" ? I had assumed that, if a C compiler could handle "quadruple floats", it would be handling them as "long doubles" - in which case building with -Duselongdouble might do the trick.

Cheers,
Rob

Comment on Re^3: maximum value of a scalar Download Code

Replies are listed 'Best First'.
Re^4: maximum value of a scalar by Anonymous Monk on Mar 02, 2009 at 05:57 UTC
I'm using gcc on linux. Not sure what the compiler's data type for "quadruple floats" is, though "long doubles" are 16 bytes accordint to ./Configure. It seems that (2^128) should be enough. I have long doubles turned on, and general 64 bit turned on, but I still max out at 2^64 instead of 2^113. Is there an additional gcc flag I can pass in that anyone knows of to get the 2^113 limit? Thanks! Scott	[reply]
Re^5: maximum value of a scalar by syphilis (Archbishop) on Mar 02, 2009 at 17:48 UTC
though "long doubles" are 16 bytes accordint to ./Configure Probably worth running a C program that will `printf("%d\n", sizeof(long double));` Then you'll know for sure. What does `perl -V` output for this build of perl ? Cheers, Rob	[reply] [d/l] [select]