1 files changed, 55 insertions, 0 deletions
diff --git a/vere/pkg/noun/jets/a/mod.c b/vere/pkg/noun/jets/a/mod.c
new file mode 100644
index 0000000..1eb9aab
--- /dev/null
+++ b/vere/pkg/noun/jets/a/mod.c
@@ -0,0 +1,55 @@
+/// @file
+
+#include "jets/k.h"
+#include "jets/q.h"
+#include "jets/w.h"
+
+#include "noun.h"
+
+u3_noun
+u3qa_mod(u3_atom a,
+         u3_atom b)
+{
+  if ( 0 == b ) {
+    return u3m_error("divide-by-zero");
+  }
+  else if ( _(u3a_is_cat(a)) && _(u3a_is_cat(b)) ) {
+    return a % b;
+  }
+  else {
+    mpz_t a_mp, b_mp;
+
+    u3r_mp(a_mp, a);
+    u3r_mp(b_mp, b);
+
+    mpz_tdiv_r(a_mp, a_mp, b_mp);
+    mpz_clear(b_mp);
+
+    return u3i_mp(a_mp);
+  }
+}
+
+u3_noun
+u3wa_mod(u3_noun cor)
+{
+  u3_noun a, b;
+
+  if ( (c3n == u3r_mean(cor, u3x_sam_2, &a, u3x_sam_3, &b, 0)) ||
+       (c3n == u3ud(a)) ||
+       (c3n == u3ud(b)) )
+  {
+    return u3m_bail(c3__fail);
+  }
+  else {
+    return u3qa_mod(a, b);
+  }
+}
+
+u3_noun
+u3ka_mod(u3_noun a,
+         u3_noun b)
+{
+  u3_noun c = u3qa_mod(a, b);
+  u3z(a); u3z(b);
+  return c;
+}