From f9a43781767007462965b21f3f518c4cfc0744c7 Mon Sep 17 00:00:00 2001
From: "r.tyminski" <r.tyminski@partner.samsung.com>
Date: Mon, 29 May 2017 11:42:10 +0200
Subject: Initial commit with upstream sources

Change-Id: Ie9460111f21fc955102fd8732a0173b2d0499a4a
---
 .../arch/arm/softfloat/source/s_roundPackToI32.c   | 79 ++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 lib/libutils/isoc/arch/arm/softfloat/source/s_roundPackToI32.c

(limited to 'lib/libutils/isoc/arch/arm/softfloat/source/s_roundPackToI32.c')

diff --git a/lib/libutils/isoc/arch/arm/softfloat/source/s_roundPackToI32.c b/lib/libutils/isoc/arch/arm/softfloat/source/s_roundPackToI32.c
new file mode 100644
index 0000000..dc27cf8
--- /dev/null
+++ b/lib/libutils/isoc/arch/arm/softfloat/source/s_roundPackToI32.c
@@ -0,0 +1,79 @@
+
+/*============================================================================
+
+This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
+Package, Release 3a, by John R. Hauser.
+
+Copyright 2011, 2012, 2013, 2014, 2015 The Regents of the University of
+California.  All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+    this list of conditions, and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions, and the following disclaimer in the documentation
+    and/or other materials provided with the distribution.
+
+ 3. Neither the name of the University nor the names of its contributors may
+    be used to endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
+DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+=============================================================================*/
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+int_fast32_t
+ softfloat_roundPackToI32(
+     bool sign, uint_fast64_t sig, uint_fast8_t roundingMode, bool exact )
+{
+    bool roundNearEven;
+    uint_fast8_t roundIncrement, roundBits;
+    uint_fast32_t sig32;
+    union { uint32_t ui; int32_t i; } uZ;
+    int_fast32_t z;
+
+    roundNearEven = (roundingMode == softfloat_round_near_even);
+    roundIncrement = 0x40;
+    if ( ! roundNearEven && (roundingMode != softfloat_round_near_maxMag) ) {
+        roundIncrement =
+            (roundingMode
+                 == (sign ? softfloat_round_min : softfloat_round_max))
+                ? 0x7F
+                : 0;
+    }
+    roundBits = sig & 0x7F;
+    sig += roundIncrement;
+    if ( sig & UINT64_C( 0xFFFFFF8000000000 ) ) goto invalid;
+    sig32 = sig>>7;
+    sig32 &= ~(uint_fast32_t) (! (roundBits ^ 0x40) & roundNearEven);
+    uZ.ui = sign ? -sig32 : sig32;
+    z = uZ.i;
+    if ( z && ((z < 0) ^ sign) ) goto invalid;
+    if ( exact && roundBits ) {
+        softfloat_exceptionFlags |= softfloat_flag_inexact;
+    }
+    return z;
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    return sign ? -0x7FFFFFFF - 1 : 0x7FFFFFFF;
+
+}
+
-- 
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