interp: fpu: add fpatan implementation

Completely untested. Hope it works...
mehfooz09 · Nov 18, 2018 · 37e1698 · 37e1698
1 parent 45590fa
commit 37e1698
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/emu/interp/fpu.h b/emu/interp/fpu.h
@@ -120,3 +120,8 @@
     set(dst, cpu->fcw,16)
 #define FLDCW(dst) \
     cpu->fcw = get(dst,16)
+
+// there's no native atan2 for 80-bit float yet.
+#define FPATAN() \
+    ST(1) = f80_from_double(atan2(f80_to_double(ST(1)), f80_to_double(ST(0)))); \
+    FPOP