From: Alex Bennée <alex.bennee@linaro.org>
Date: Thu, 7 Dec 2017 19:09:24 +0000 (+0000)
Subject: include/fpu/softfloat: implement float16_chs helper
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5f10aef521427b3909c24a0c7a82839b43f876e2;p=qemu.git

include/fpu/softfloat: implement float16_chs helper

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---

diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index 1d34f2c3eb..f75aa59100 100644
--- a/include/fpu/softfloat.h
+++ b/include/fpu/softfloat.h
@@ -272,6 +272,15 @@ static inline float16 float16_abs(float16 a)
      */
     return make_float16(float16_val(a) & 0x7fff);
 }
+
+static inline float16 float16_chs(float16 a)
+{
+    /* Note that chs does *not* handle NaN specially, nor does
+     * it flush denormal inputs to zero.
+     */
+    return make_float16(float16_val(a) ^ 0x8000);
+}
+
 /*----------------------------------------------------------------------------
 | The pattern for a default generated half-precision NaN.
 *----------------------------------------------------------------------------*/