27 lines
552 B
C
27 lines
552 B
C
/*
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(c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
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See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* $Header$ */
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# include "adder.h"
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b64_sft(e1,n)
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B64 *e1;
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short n;
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{
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if (n>0) do { /* RIGHT shift n bits */
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e1->l_32 >>= 1; /* shift 64 bits */
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if (e1->h_32 & 1)
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e1->l_32 |= 0x80000000L;
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e1->h_32 >>= 1;
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} while (--n);
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else /* LEFT shift n bits */
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while (n++) {
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e1->h_32 <<= 1; /* shift 64 bits */
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if (e1->l_32 & 0x80000000L)
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e1->h_32 |= 1;
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e1->l_32 <<= 1;
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}
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}
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