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author | rsc <devnull@localhost> | 2004-03-21 14:06:38 +0000 |
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committer | rsc <devnull@localhost> | 2004-03-21 14:06:38 +0000 |
commit | b3f61791f1e9095ce8ae9c6d6415b4ee94e2f7eb (patch) | |
tree | deaa85427ae73a045ddef39395bd286f9d3dc2ff /src/libmp/port/mpmod.c | |
parent | 498bb22174aa2c76493e8c67b92949271131ebfb (diff) | |
download | plan9port-b3f61791f1e9095ce8ae9c6d6415b4ee94e2f7eb.tar.gz plan9port-b3f61791f1e9095ce8ae9c6d6415b4ee94e2f7eb.tar.bz2 plan9port-b3f61791f1e9095ce8ae9c6d6415b4ee94e2f7eb.zip |
Add libmp.
Diffstat (limited to 'src/libmp/port/mpmod.c')
-rw-r--r-- | src/libmp/port/mpmod.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/libmp/port/mpmod.c b/src/libmp/port/mpmod.c new file mode 100644 index 00000000..91bebfa2 --- /dev/null +++ b/src/libmp/port/mpmod.c @@ -0,0 +1,15 @@ +#include "os.h" +#include <mp.h> +#include "dat.h" + +// remainder = b mod m +// +// knuth, vol 2, pp 398-400 + +void +mpmod(mpint *b, mpint *m, mpint *remainder) +{ + mpdiv(b, m, nil, remainder); + if(remainder->sign < 0) + mpadd(m, remainder, remainder); +} |