
/*============================================================================

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, 2015 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,
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the name of the Regents nor the names of its contributors may be used to
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IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
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REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED
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=============================================================================*/

#include <stdint.h>
#include "platform.h"
#include "primitiveTypes.h"

#ifndef softfloat_mul128MTo256M

void
 softfloat_mul128MTo256M(
     const uint32_t *aPtr, const uint32_t *bPtr, uint32_t *zPtr )
{
    uint32_t *lastZPtr, wordB;
    uint64_t dwordProd;
    uint32_t wordZ;
    uint_fast8_t carry;

    bPtr += indexWordLo( 4 );
    lastZPtr = zPtr + indexMultiwordHi( 8, 5 );
    zPtr += indexMultiwordLo( 8, 5 );
    wordB = *bPtr;
    dwordProd = (uint64_t) aPtr[indexWord( 4, 0 )] * wordB;
    zPtr[indexWord( 5, 0 )] = dwordProd;
    dwordProd = (uint64_t) aPtr[indexWord( 4, 1 )] * wordB + (dwordProd>>32);
    zPtr[indexWord( 5, 1 )] = dwordProd;
    dwordProd = (uint64_t) aPtr[indexWord( 4, 2 )] * wordB + (dwordProd>>32);
    zPtr[indexWord( 5, 2 )] = dwordProd;
    dwordProd = (uint64_t) aPtr[indexWord( 4, 3 )] * wordB + (dwordProd>>32);
    zPtr[indexWord( 5, 3 )] = dwordProd;
    zPtr[indexWord( 5, 4 )] = dwordProd>>32;
    do {
        bPtr += wordIncr;
        zPtr += wordIncr;
        wordB = *bPtr;
        dwordProd = (uint64_t) aPtr[indexWord( 4, 0 )] * wordB;
        wordZ = zPtr[indexWord( 5, 0 )] + (uint32_t) dwordProd;
        zPtr[indexWord( 5, 0 )] = wordZ;
        carry = (wordZ < (uint32_t) dwordProd);
        dwordProd =
            (uint64_t) aPtr[indexWord( 4, 1 )] * wordB + (dwordProd>>32);
        wordZ = zPtr[indexWord( 5, 1 )] + (uint32_t) dwordProd + carry;
        zPtr[indexWord( 5, 1 )] = wordZ;
        carry =
            carry ? (wordZ <= (uint32_t) dwordProd)
                : (wordZ < (uint32_t) dwordProd);
        dwordProd =
            (uint64_t) aPtr[indexWord( 4, 2 )] * wordB + (dwordProd>>32);
        wordZ = zPtr[indexWord( 5, 2 )] + (uint32_t) dwordProd + carry;
        zPtr[indexWord( 5, 2 )] = wordZ;
        carry =
            carry ? (wordZ <= (uint32_t) dwordProd)
                : (wordZ < (uint32_t) dwordProd);
        dwordProd =
            (uint64_t) aPtr[indexWord( 4, 3 )] * wordB + (dwordProd>>32);
        wordZ = zPtr[indexWord( 5, 3 )] + (uint32_t) dwordProd + carry;
        zPtr[indexWord( 5, 3 )] = wordZ;
        carry =
            carry ? (wordZ <= (uint32_t) dwordProd)
                : (wordZ < (uint32_t) dwordProd);
        zPtr[indexWord( 5, 4 )] = (dwordProd>>32) + carry;
    } while ( zPtr != lastZPtr );

}

#endif