1 files changed, 24 insertions, 0 deletions
diff --git a/src/cmd/eqn/eqnbox.c b/src/cmd/eqn/eqnbox.c
new file mode 100644
index 00000000..7dd0b867
--- /dev/null
+++ b/src/cmd/eqn/eqnbox.c
@@ -0,0 +1,24 @@
+#include "e.h"
+
+void eqnbox(int p1, int p2, int lu)
+{
+	double b, h;
+	char *sh;
+	extern char *IRspace;
+
+	yyval = p1;
+	b = max(ebase[p1], ebase[p2]);
+	eht[yyval] = h = b + max(eht[p1]-ebase[p1], 
+		eht[p2]-ebase[p2]);
+	ebase[yyval] = b;
+	dprintf(".\tS%d <- %d %d; b=%g, h=%g\n", yyval, p1, p2, b, h);
+	sh = pad(class[rclass[p1]][lclass[p2]]);
+	if (lu) {
+		printf(".nr %d \\w'\\*(%d%s'\n", p1, p1, sh);
+		printf(".ds %d \\h'|\\n(09u-\\n(%du'\\*(%d\n", p1, p1, p1);
+	}
+	printf(".as %d \"%s\\*(%d\n", yyval, sh, p2);
+	rfont[p1] = rfont[p2];
+	rclass[p1] = rclass[p2];
+	sfree(p2);
+}