removing (outdated) drawterm

drawterm is much better maintained by russ cox,
so removing this outdated copy.

for a more recent version, go to:

http://swtch.com/drawterm/

1 files changed, 0 insertions, 86 deletions

diff --git a/sys/src/cmd/unix/drawterm/libmp/mpexp.c b/sys/src/cmd/unix/drawterm/libmp/mpexp.c
deleted file mode 100644
index 745057289..000000000
--- a/sys/src/cmd/unix/drawterm/libmp/mpexp.c
+++ /dev/null
@@ -1,86 +0,0 @@
-#include "os.h"
-#include <mp.h>
-#include "dat.h"
-
-// res = b**e
-//
-// knuth, vol 2, pp 398-400
-
-enum {
-	Freeb=	0x1,
-	Freee=	0x2,
-	Freem=	0x4,
-};
-
-//int expdebug;
-
-void
-mpexp(mpint *b, mpint *e, mpint *m, mpint *res)
-{
-	mpint *t[2];
-	int tofree;
-	mpdigit d, bit;
-	int i, j;
-
-	t[0] = mpcopy(b);
-	t[1] = res;
-
-	tofree = 0;
-	if(res == b){
-		b = mpcopy(b);
-		tofree |= Freeb;
-	}
-	if(res == e){
-		e = mpcopy(e);
-		tofree |= Freee;
-	}
-	if(res == m){
-		m = mpcopy(m);
-		tofree |= Freem;
-	}
-
-	// skip first bit
-	i = e->top-1;
-	d = e->p[i];
-	for(bit = mpdighi; (bit & d) == 0; bit >>= 1)
-		;
-	bit >>= 1;
-
-	j = 0;
-	for(;;){
-		for(; bit != 0; bit >>= 1){
-			mpmul(t[j], t[j], t[j^1]);
-			if(bit & d)
-				mpmul(t[j^1], b, t[j]);
-			else
-				j ^= 1;
-			if(m != nil && t[j]->top > m->top){
-				mpmod(t[j], m, t[j^1]);
-				j ^= 1;
-			}
-		}
-		if(--i < 0)
-			break;
-		bit = mpdighi;
-		d = e->p[i];
-	}
-	if(m != nil){
-		mpmod(t[j], m, t[j^1]);
-		j ^= 1;
-	}
-	if(t[j] == res){
-		mpfree(t[j^1]);
-	} else {
-		mpassign(t[j], res);
-		mpfree(t[j]);
-	}
-
-	if(tofree){
-		if(tofree & Freeb)
-			mpfree(b);
-		if(tofree & Freee)
-			mpfree(e);
-		if(tofree & Freem)
-			mpfree(m);
-	}
-}