diff options
author | rsc <devnull@localhost> | 2004-03-21 14:06:38 +0000 |
---|---|---|
committer | rsc <devnull@localhost> | 2004-03-21 14:06:38 +0000 |
commit | b3f61791f1e9095ce8ae9c6d6415b4ee94e2f7eb (patch) | |
tree | deaa85427ae73a045ddef39395bd286f9d3dc2ff /src/libmp/port/letomp.c | |
parent | 498bb22174aa2c76493e8c67b92949271131ebfb (diff) | |
download | plan9port-b3f61791f1e9095ce8ae9c6d6415b4ee94e2f7eb.tar.gz plan9port-b3f61791f1e9095ce8ae9c6d6415b4ee94e2f7eb.tar.bz2 plan9port-b3f61791f1e9095ce8ae9c6d6415b4ee94e2f7eb.zip |
Add libmp.
Diffstat (limited to 'src/libmp/port/letomp.c')
-rw-r--r-- | src/libmp/port/letomp.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/libmp/port/letomp.c b/src/libmp/port/letomp.c new file mode 100644 index 00000000..e23fed21 --- /dev/null +++ b/src/libmp/port/letomp.c @@ -0,0 +1,28 @@ +#include "os.h" +#include <mp.h> +#include "dat.h" + +// convert a little endian byte array (least significant byte first) to an mpint +mpint* +letomp(uchar *s, uint n, mpint *b) +{ + int i=0, m = 0; + mpdigit x=0; + + if(b == nil) + b = mpnew(0); + mpbits(b, 8*n); + for(; n > 0; n--){ + x |= ((mpdigit)(*s++)) << i; + i += 8; + if(i == Dbits){ + b->p[m++] = x; + i = 0; + x = 0; + } + } + if(i > 0) + b->p[m++] = x; + b->top = m; + return b; +} |