--- nono/m88xx0/m88100acc.h	2026/04/29 17:04:34	1.1.1.1
+++ nono/m88xx0/m88100acc.h	2026/04/29 17:04:44	1.1.1.2
@@ -19,6 +19,10 @@
 #define m88100opf_O5(x)		m88100opf_S2(x)
 #define m88100opf_IMM16(x)	((x) & 0x0000ffffU)
 #define m88100opf_VEC9(x)	((x) & 0x000001ffU)
+// FP フィールド
+#define m88100opf_FP_T1(x)	(((x) >> 9) & 3)
+#define m88100opf_FP_T2(x)	(((x) >> 7) & 3)
+#define m88100opf_FP_TD(x)	(((x) >> 5) & 3)
 
 // cmp のやつ
 static inline uint32
@@ -37,3 +41,24 @@ acc_cmp(uint32 a, uint32 b)
 	if ((int32)a == (int32)b) rv |= (1 << 2);
 	return rv;
 }
+
+// fcmp のやつ
+static inline uint32
+acc_fcmp(double a, double b)
+{
+	uint32 rv = 0;
+	if (a <= 0 || b <= a) rv |= (1 << 11);	// ob
+	if (0 < a && a < b) rv |= (1 << 10);	// in
+	if (0 <= a && a <= b) rv |= (1 << 9);		// ib
+	if (a < 0 || b < a) rv |= (1 << 8);		// ou
+
+	if (a >= b) rv |= (1 << 7);		// ge
+	if (a <  b) rv |= (1 << 6);		// lt
+	if (a <= b) rv |= (1 << 5);		// le
+	if (a >  b) rv |= (1 << 4);		// gt
+	if (a != b) rv |= (1 << 3);		// ne
+	if (a == b) rv |= (1 << 2);		// eq
+	if (true  ) rv |= (1 << 1);		// cp
+	if (false ) rv |= (1 << 0);		// nc
+	return rv;
+}