Minimal circuit for detecting loss of precision in floating poin

Details Minimal circuit for detecting loss of precision in floating poin Minimal circuit for detecting loss of precision in floating poin

1997-06-02

1999-05-18

Kizou, Hassan

Boots, shoes, and leggings

36471503, 36474804, 364718, G06F7/38

Patent

active

059056630

ABSTRACT:
A circuit and method for detecting when converting a number from a floating point format to a fixed point format will result in a loss of precision. All bits but the most significant bit of the exponent of the floating point number are inverted. This results in a transformed exponent that is input to a comparator. The mantissa of the floating point number is input to a signed trailing one detector (STOD). The STOD outputs a signed number that indicates the bit position of the least significant logical "1" in the mantissa, plus a bias number. The bias number is chosen to be the number of bits in the fractional part of the fixed point format minus the number of bits in the mantissa. The output of the STOD is input to the other input of the comparator. The output of the comparator indicates whether or not a loss of precision occurs.

REFERENCES:
patent: 5161117 (1992-11-01), Waggener, Jr.
patent: 5268855 (1993-12-01), Mason et al.
patent: 5304994 (1994-04-01), Heikes
patent: 5317527 (1994-05-01), Britton et al.
patent: 5487022 (1996-01-01), Simpson et al.
patent: 5506797 (1996-04-01), Koshiba
patent: 5627773 (1997-05-01), Wolrich et al.
patent: 5742537 (1998-04-01), Wolrich et al.
patent: 5761103 (1995-03-01), Oakland et al.
patent: 5781464 (1995-12-01), Mehta
patent: 5801978 (1996-02-01), Baydatch
"IEEE std. for Binary Floating-point arithmetic"; IEEE std. 754-1985; pp. 8-12.

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