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Diffstat (limited to 'source/i32_to_extF80M.c')
-rw-r--r-- | source/i32_to_extF80M.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/source/i32_to_extF80M.c b/source/i32_to_extF80M.c new file mode 100644 index 0000000..ea2dd60 --- /dev/null +++ b/source/i32_to_extF80M.c @@ -0,0 +1,75 @@ + +/*============================================================================ + +This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic +Package, Release 3, by John R. Hauser. + +Copyright 2011, 2012, 2013, 2014 The Regents of the University of California +(Regents). All Rights Reserved. Redistribution and use in source and binary +forms, with or without modification, are permitted provided that the following +conditions are met: + +Redistributions of source code must retain the above copyright notice, +this list of conditions, and the following two paragraphs of disclaimer. +Redistributions in binary form must reproduce the above copyright notice, +this list of conditions, and the following two paragraphs of disclaimer in the +documentation and/or other materials provided with the distribution. Neither +the name of the Regents nor the names of its contributors may be used to +endorse or promote products derived from this software without specific prior +written permission. + +IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, +SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING +OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS +BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED +TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED +HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE +MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + +=============================================================================*/ + +#include <stdint.h> +#include "platform.h" +#include "internals.h" +#include "softfloat.h" + +#ifdef SOFTFLOAT_FAST_INT64 + +void i32_to_extF80M( int32_t a, extFloat80_t *zPtr ) +{ + + *zPtr = i32_to_extF80( a ); + +} + +#else + +void i32_to_extF80M( int32_t a, extFloat80_t *zPtr ) +{ + struct extFloat80M *zSPtr; + uint_fast16_t uiZ64; + uint64_t sigZ; + bool sign; + uint32_t absA; + int_fast8_t shiftCount; + + zSPtr = (struct extFloat80M *) zPtr; + uiZ64 = 0; + sigZ = 0; + if ( a ) { + sign = (a < 0); + absA = sign ? -(uint32_t) a : (uint32_t) a; + shiftCount = softfloat_countLeadingZeros32( absA ); + uiZ64 = packToExtF80UI64( sign, 0x401E - shiftCount ); + sigZ = (uint64_t) (absA<<shiftCount)<<32; + } + zSPtr->signExp = uiZ64; + zSPtr->signif = sigZ; + +} + +#endif + |