Add graph, plot

src/cmd/graph/subr.c

@@ -0,0 +1,19 @@
+#include <u.h>
+#include <libc.h>
+#include <stdio.h>
+#include "iplot.h"
+void putnum(int num[], double *ff[]){
+	double **fp, *xp;
+	int *np, n,i;
+	np = num;
+	fp = ff;
+	while( (n = *np++)){
+		xp = *fp++;
+		printf("{ ");
+		for(i=0; i<n;i++){
+			printf("%g %g ",*xp, *(xp+1));
+			if(i&1)printf("\n");
+		}
+		printf("}\n");
+	}
+}