From 3a8f7d6d84bda3e2fc9e647da81176b34f2aee37 Mon Sep 17 00:00:00 2001
From: "Emilio G. Cota" <cota@braap.org>
Date: Wed, 19 Dec 2018 09:23:28 -0500
Subject: [PATCH] softfloat: add float{32,64}_is_{de,}normal

This paves the way for upcoming work.

Backports commit 588e6dfd8774e6da56b6995611655fbe59ff564a from qemu
---
 qemu/include/fpu/softfloat.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/qemu/include/fpu/softfloat.h b/qemu/include/fpu/softfloat.h
index b9deb258..bc021524 100644
--- a/qemu/include/fpu/softfloat.h
+++ b/qemu/include/fpu/softfloat.h
@@ -469,6 +469,16 @@ static inline int float32_is_zero_or_denormal(float32 a)
     return (float32_val(a) & 0x7f800000) == 0;
 }
 
+static inline bool float32_is_normal(float32 a)
+{
+    return ((float32_val(a) + 0x00800000) & 0x7fffffff) >= 0x01000000;
+}
+
+static inline bool float32_is_denormal(float32 a)
+{
+    return float32_is_zero_or_denormal(a) && !float32_is_zero(a);
+}
+
 static inline float32 float32_set_sign(float32 a, int sign)
 {
     return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31));
@@ -611,6 +621,16 @@ static inline int float64_is_zero_or_denormal(float64 a)
     return (float64_val(a) & 0x7ff0000000000000LL) == 0;
 }
 
+static inline bool float64_is_normal(float64 a)
+{
+    return ((float64_val(a) + (1ULL << 52)) & -1ULL >> 1) >= 1ULL << 53;
+}
+
+static inline bool float64_is_denormal(float64 a)
+{
+    return float64_is_zero_or_denormal(a) && !float64_is_zero(a);
+}
+
 static inline float64 float64_set_sign(float64 a, int sign)
 {
     return make_float64((float64_val(a) & 0x7fffffffffffffffULL)