Stack Exchange

Stephen Canon

Lebanon, NH

Age: 33

The sole holder of the gold [floating-point] badge, and the first man to earn the silver [assembly] badge.

Assembly programmer, mathematician, micro-optimization and micro-architecture specialist.

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Top Questions
Top Answers
158
Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
stackoverflow.com

139
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
stackoverflow.com

101
Protecting executable from reverse engineering?
stackoverflow.com

74
Why do programming languages round down until .6?
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72
C - determine if a number is prime
stackoverflow.com

68
Retain precision with Doubles in java
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65
Double vs float on the iPhone
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55
Precision of multiplication by 1.0 and int <=> float conversion
stackoverflow.com

51
What is the rationale for all comparisons returning false for IEEE754 NaN values?
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50
Is there a floating point value of x, for which x-x == 0 is false?
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45
Objective C - float checking for nan
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43
C/C++: Force Bit Field Order and Alignment
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37
Issue with float and double data types in objective C
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36
Performance of built-in types : char vs short vs int vs. float vs. double
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32
Why is memset() incorrectly initializing int?
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31
Why is such complex code emitted for dividing a signed integer by a power of two?
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27
Speed difference between using int and unsigned int when mixed with doubles
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27
Why isnt int pow(int base, int exponent) in the standard C++ libraries?
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27
Why does (1 >> 0x80000000) == 1?
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26
What is a “byte” in C / C++
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25
Modern x86 cost model
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24
What is “vectorization”?
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23
union consisting of float : completely insane output
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22
Why doesn't this crash? Aren't I dividing by zero here?
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22
Why does Gnu Octave have negative zeroes?
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21
Why is Math.sqrt(i*i).floor == i?
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20
Code Golf: Fractran
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20
How many double numbers are there between 0.0 and 1.0?
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18
Rudimentary ways to measure execution time of a method
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18
Fixed-size floating point types
stackoverflow.com

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