libzahl/zahl, branch master[Stable] Big integer library
https://git.maandree.se/libzahl/atom?h=master2026-02-15T00:47:02Zfix out of bounds read in zlsb()2026-02-15T00:47:02ZValentina Demiciseauxvallyyyyy@proton.me2026-02-14T23:46:26Zurn:sha1:0121293f8de339d2c6d26da63a92f79cfff1b871
prev scales i from num chars -> num bits, then indexes with it, causing
a page fault or reading garbage. scale i after the read instead.
here is a reproducer
#include <stdio.h>
#include "libzahl/zahl.h"
int
main(void)
{
z_t x;
zinit(x);
zsetu(x, 1);
zlsh(x, x, 2097153);
printf("used chars: expect 32769, have %lu\n", x->used);
size_t tz = zlsb(x);
printf("tz: expect 2097153, have %lu\n", tz);
}
Optimise libzahl_memcpy for clang2016-05-07T16:15:59ZMattias Andréemaandree@kth.se2016-05-07T16:15:59Zurn:sha1:84ad8821d456e8f7f40df43b7eb7245703004ce7
Signed-off-by: Mattias Andrée <maandree@kth.se>
Some small improvements2016-05-07T15:22:42ZMattias Andréemaandree@kth.se2016-05-07T15:22:42Zurn:sha1:d6f4393542998276250bd3f3519bb824ca4b3d91
Signed-off-by: Mattias Andrée <maandree@kth.se>
Optimisations2016-05-07T01:02:56ZMattias Andréemaandree@kth.se2016-05-07T01:02:56Zurn:sha1:fdc75a358e4c20116640c08f4e8ce7a09dc3cebd
Signed-off-by: Mattias Andrée <maandree@kth.se>
Make zdiv and zmod (calls zdivmod) inline2016-05-06T17:00:44ZMattias Andréemaandree@kth.se2016-05-06T17:00:44Zurn:sha1:4e659044778dfd05a5f5d2b41611e7737a0eb825
Signed-off-by: Mattias Andrée <maandree@kth.se>
Make zmul and zsqr (calls low-level functions) inline2016-05-06T11:48:43ZMattias Andréemaandree@kth.se2016-05-06T11:48:43Zurn:sha1:b0e210a02b8576828ac64e8b97bd565fd28c8748
Signed-off-by: Mattias Andrée <maandree@kth.se>
Do not use explicit optimisation level on zsave2016-05-05T23:51:47ZMattias Andréemaandree@kth.se2016-05-05T23:51:47Zurn:sha1:dedfc0dd344e1d3a97dc175b3c5bff23c91783cb
Signed-off-by: Mattias Andrée <maandree@kth.se>
Optimisations2016-05-05T19:13:16ZMattias Andréemaandree@kth.se2016-05-05T19:11:43Zurn:sha1:9437becf6d8aa4d9a3872b2cd6b353dc4c90a1cb
Signed-off-by: Mattias Andrée <maandree@kth.se>
Optimise and use __ around all compiler extensions2016-05-05T14:04:11ZMattias Andréemaandree@kth.se2016-05-05T14:04:11Zurn:sha1:683babd645e3a41b26326beea30879ee30920392
Signed-off-by: Mattias Andrée <maandree@kth.se>
Rename zahl-{inlines,internals}.h => zahl/{inlines,internals}.h2016-05-05T12:46:02ZMattias Andréemaandree@kth.se2016-05-05T12:46:02Zurn:sha1:35aad695c4b9b9d3440f68f01d870738aea838c1
Signed-off-by: Mattias Andrée <maandree@kth.se>