15213 Recitation Section C Shimin Chen Oct 7 2002 Outline Floating Point Review Last Year s Exam Problems Important Dates Lab 3 due Monday Oct 7 11 59pm Exam 1 Tuesday Oct 8 6 00 7 30pm Doherty Hall 2315 15213 Recitation C 2 Shimin Chen Floating Point Representation Numerical Form 1 S M 2E Sign bit S positive 0 negative 1 Significand M in 1 0 2 0 Exponent E Encoding s 15213 Recitation C exp frac E M 3 Shimin Chen IEEE Floating Point Format s exp frac exp 00 01 11 10 Normalized values Denormalized values 00 00 Special values 11 11 15213 Recitation C 4 Shimin Chen Normalized Values 1 S M 2E s exp frac exp field must be 00 01 11 10 Encoding of E E exp bias Encoding of M M 1 xxxxxxxx frac 15213 Recitation C 5 Shimin Chen Denormalized Values 1 S M 2E s 00 00 frac exp field must be 00 00 Encoding of E E exp bias 1 1 bias Encoding of M M 0 xxxxxxxx frac 15213 Recitation C 6 Shimin Chen Special Values s 11 11 frac exp field must be 11 11 Values 0 11 11 00 00 1 11 11 00 00 NaN Not a Number the rest 15213 Recitation C 7 Shimin Chen
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