On 2022-09-16 16:34:58 -0400, Eric Li wrote:
> Thanks to https://stackoverflow.com/a/73740744, looks like the cause of
> the bug it that GMP triggered a signed overflow in the following code
> (from https://gmplib.org/repo/gmp/file/feb796a7f683/mpf/set_str.c#l315)
[...]
I've given an answer:
Hi Eric,
> GMP version: gmp-6.2.1-2.fc36.x86_64, installed using dnf on Fedora 36.
> Test program: a.c and b.cpp, see attachment.
> To run a.c, use "gcc a.c -o a -lgmp && ./a". The output on my machine
> is "0.1e-3215911262793760767".
> To run b.cpp, use "g++ b.cpp -o b -lgmp -lgmpxx &&
While using GMP to read floating point numbers, I noticed that when the
exponent is too large, the exponent overflows without warning or error.
GMP version: gmp-6.2.1-2.fc36.x86_64, installed using dnf on Fedora 36.
Test program: a.c and b.cpp, see attachment.
To run a.c, use "gcc a.c -o a -lgmp
