Hexagon (target/hexagon/fma_emu.[ch]) utility functions

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1612763186-18161-18-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/hexagon/fma_emu.h

+/*
+ *  Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef HEXAGON_FMA_EMU_H
+#define HEXAGON_FMA_EMU_H
+
+static inline bool is_finite(float64 x)
+{
+    return !float64_is_any_nan(x) && !float64_is_infinity(x);
+}
+
+int32_t float64_getexp(float64 f64);
+int32_t float32_getexp(float32 f32);
+float32 infinite_float32(uint8_t sign);
+float32 internal_fmafx(float32 a, float32 b, float32 c,
+                       int scale, float_status *fp_status);
+float32 internal_mpyf(float32 a, float32 b, float_status *fp_status);
+float64 internal_mpyhh(float64 a, float64 b,
+                       unsigned long long int accumulated,
+                       float_status *fp_status);
+
+#endif