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author | Jarkko Hietaniemi <jhi@iki.fi> | 2015-08-08 22:59:52 -0400 |
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committer | Jarkko Hietaniemi <jhi@iki.fi> | 2015-08-10 08:35:23 -0400 |
commit | 3bbe6a60016d937cddcaf3da3886cfe215ce98ea (patch) | |
tree | e3c1a4b193758e9f4ebb6d99a981b3e5b425db04 | |
parent | a262b72a872ab237557e356e0e581d68b5b51260 (diff) | |
download | perl-3bbe6a60016d937cddcaf3da3886cfe215ce98ea.tar.gz |
Comment tweak related to [rt.perl.org #125710].
-rw-r--r-- | perl.h | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -6682,6 +6682,10 @@ extern void moncontrol(int); * This means that in this format there are 61 bits available * for the nan payload. * + * Note that the 32-bit x86 ABI cannot do signaling nans: the x87 + * simply cannot preserve the bit. You can either use the 80-bit + * extended precision (long double, -Duselongdouble), or use x86-64. + * * In all platforms, the payload bytes (and bits, some of them are * often in a partial byte) themselves can be either all zero (x86), * all one (sparc or mips), or a mixture: in IEEE 754 128-bit double |