a C library for Big Interger KDB+ Arithmetic
Function: add, sub, mul, div, cmp
Inputs: pass in x and y as strings of large numbers in base 2, 10 or 16 ... 62
Outputs: string number in specified base
Install GMP library with get_gmp.sh
Compile C bigint libraries (examples for 64 bit kdb)
- Windows dll compilation using VS: `
cl /LD /DKXVER=3 bigint.c bigint.def q.lib -lgmp- Linux so compilation using gcc:
gcc -D KXVER=3 -Wall -fno-strict-aliasing -Wno-parentheses -g -O2 -shared -fPIC -o bigint.so bigint.c -lgmp- Mac so compilation using gcc:
gcc -bundle -undefined dynamic_lookup bigint.c -o bigint.so -lgmpbigAdd:`bigint 2:(`add;3)
bigSub:`bigint 2:(`sub;3)
bigMul:`bigint 2:(`mul;3)
bigDiv:`bigint 2:(`divy;3)
bigCmp:`bigint 2:(`cmp;3)q)bigAdd:`bigint 2:(`add;3)
q)bigSub:`bigint 2:(`sub;3)
q)bigMul:`bigint 2:(`mul;3)
q)bigDiv:`bigint 2:(`divy;3)
q)bigCmp:`bigint 2:(`cmp;3)
q)base:16;
q)x:"4ee2d6d415b85acef8100000000";
q)y:"ff";
q)bigAdd[x;y;base]
base = 16
x = 4ee2d6d415b85acef8100000000
y = ff
z = 4ee2d6d415b85acef81000000ff
"4ee2d6d415b85acef81000000ff"
q)bigSub[x;y;base]
base = 16
x = 4ee2d6d415b85acef8100000000
y = ff
z = 4ee2d6d415b85acef80ffffff01
"4ee2d6d415b85acef80ffffff01"
q)bigMul[x;y;base]
base = 16
x = 4ee2d6d415b85acef8100000000
y = ff
z = 4e93f3fd41a2a2742917f00000000
"4e93f3fd41a2a2742917f00000000"
q)bigDiv[x;y;base]
base = 16
x = 4ee2d6d415b85acef8100000000
y = ff
z = 4f3208dcf2ab05d4ccdcdcdcd
"4f3208dcf2ab05d4ccdcdcdcd"
q)bigCmp[x;y;base]
3i
q)bigCmp[y;x;base]
-3i
q)bigCmp[y;y;base]
0i
Licensed under either of
-
Universal Permissive License 1.0 (LICENSE-UPL or https://opensource.org/licenses/UPL)
-
Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Universal Permissive License v 1.0 license, shall be dual licensed as above, without any additional terms or conditions.