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31 lines
761 B
31 lines
761 B
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#include <stdint.h>
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#include "platform.h"
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#include "primitives.h"
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struct uint128
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softfloat_shift128RightJam( uint64_t a64, uint64_t a0, unsigned int count )
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{
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unsigned int negCount;
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struct uint128 z;
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if ( count < 64 ) {
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negCount = - count;
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z.v64 = a64>>( count & 63 );
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z.v0 =
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a64<<( negCount & 63 ) | a0>>count
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| ( (uint64_t) ( a0<<( negCount & 63 ) ) != 0 );
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} else {
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z.v64 = 0;
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z.v0 =
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( count < 128 )
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? a64>>( count & 63 )
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| ( ( ( a64 & ( ( (uint64_t) 1<<( count & 63 ) ) - 1 ) )
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| a0 )
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!= 0 )
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: ( ( a64 | a0 ) != 0 );
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}
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return z;
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}
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