summaryrefslogtreecommitdiffstats
path: root/src/libs/softfloat-3e/source/f16_to_extF80M.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/libs/softfloat-3e/source/f16_to_extF80M.c')
-rw-r--r--src/libs/softfloat-3e/source/f16_to_extF80M.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/src/libs/softfloat-3e/source/f16_to_extF80M.c b/src/libs/softfloat-3e/source/f16_to_extF80M.c
new file mode 100644
index 00000000..a96a254b
--- /dev/null
+++ b/src/libs/softfloat-3e/source/f16_to_extF80M.c
@@ -0,0 +1,111 @@
+
+/*============================================================================
+
+This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
+Package, Release 3e, 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 "specialize.h"
+#include "softfloat.h"
+
+#ifdef SOFTFLOAT_FAST_INT64
+
+void f16_to_extF80M( float16_t a, extFloat80_t *zPtr SOFTFLOAT_STATE_DECL_COMMA )
+{
+
+ *zPtr = f16_to_extF80( a SOFTFLOAT_STATE_ARG_COMMA );
+
+}
+
+#else
+
+void f16_to_extF80M( float16_t a, extFloat80_t *zPtr SOFTFLOAT_STATE_DECL_COMMA )
+{
+ struct extFloat80M *zSPtr;
+ union ui16_f16 uA;
+ uint16_t uiA;
+ bool sign;
+ int_fast8_t exp;
+ uint16_t frac;
+ struct commonNaN commonNaN;
+ uint_fast16_t uiZ64;
+ uint32_t uiZ32;
+ struct exp8_sig16 normExpSig;
+
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ zSPtr = (struct extFloat80M *) zPtr;
+ uA.f = a;
+ uiA = uA.ui;
+ sign = signF16UI( uiA );
+ exp = expF16UI( uiA );
+ frac = fracF16UI( uiA );
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ if ( exp == 0x1F ) {
+ if ( frac ) {
+ softfloat_f16UIToCommonNaN( uiA, &commonNaN SOFTFLOAT_STATE_ARG_COMMA );
+ softfloat_commonNaNToExtF80M( &commonNaN, zSPtr );
+ return;
+ }
+ uiZ64 = packToExtF80UI64( sign, 0x7FFF );
+ uiZ32 = 0x80000000;
+ goto uiZ;
+ }
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ if ( ! exp ) {
+ if ( ! frac ) {
+ uiZ64 = packToExtF80UI64( sign, 0 );
+ uiZ32 = 0;
+ goto uiZ;
+ }
+ normExpSig = softfloat_normSubnormalF16Sig( frac );
+ exp = normExpSig.exp;
+ frac = normExpSig.sig;
+ }
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ uiZ64 = packToExtF80UI64( sign, exp + 0x3FF0 );
+ uiZ32 = 0x80000000 | (uint32_t) frac<<21;
+ uiZ:
+ zSPtr->signExp = uiZ64;
+ zSPtr->signif = (uint64_t) uiZ32<<32;
+
+}
+
+#endif
+