Texas Instruments TMS320C64X Programmer's Reference Manual page 98

DSP_recip16
Special Requirements None
Implementation Notes
Benchmarks
4-70
*(rexp++)=normal−15;
b=0x80000000;
for(j=15;j>0;j−−)
b=_subc(b,a);
b=b&0x7FFF;
if(neg) b=−b;
*(rfrac++)=b;
}
}
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Bank Conflicts: No bank conflicts occur.
-
Interruptibility: The code is interruptible.
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The conditional subtract instruction, SUBC, is used for division. SUBC is
used once for every bit of quotient needed (15).
Cycles 8 * nx + 14
Codesize 196 bytes
/* store exponent */
/* dividend = 1 */
/* divide */
/* clear remainder
/* (clear upper half) */
/* if originally
/* negative, negate */
/* store fraction */