intandfloat.pdf - Integer and float numbers Edited by Carlo U Nicola FHNW SG I from the book of Randal E Bryant David O\u2019Hallaron \u201cIntroduction to

intandfloat.pdf - Integer and float numbers Edited by Carlo...

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1 Inte ger and float numbers Edited by Carlo U. Nicola, FHNW SG I from the book of Randal E. Bryant, David O’Hallaron, “ Introduction to Computer Systems: A Programmer’s perspective ”, Prentice Hall, 2002 LLP FS08 2 C puzzles – Assume machine with 32 bit word size, two’s complement integers – For each of the following C expressions, either: Argue that is true for all argument values Give example where not true x < 0 ((x*2) < 0) ux >= 0 x & 7 == 7 (x<<30) < 0 ux > -1 x > y -x < -y x * x >= 0 x > 0 && y > 0 x + y > 0 x >= 0 -x <= 0 x <= 0 -x >= 0 int x = foo(); int y = bar(); unsigned ux = x; unsigned uy = y; Initialization
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