Frama-C This post contains a complete list of everything a C program can do with a function pointer, for a rather reasonable definition of “do”. Examples of things not to do with a function pointer are also provided. That list, in contrast, is in no way exhaustive. What a C program...
Read MoreThe documentation of the correctly-rounded CRlibm floating-point library states for the difficult pow() function (p. 159): Directed rounding requires additional work in particular in subnormal handling and in exact case management. There are more exact cases in directed rounding modes therefore the performance should also be inferior. The phrase “exact...
Read MoreQuiz time What does the program below do? #include <stdio.h> int main(){ struct { int t[4]; int u; } v; v.u = 3; v.t[4] = 4; printf(\v.u=%d" v.u); return 0; } Two answers are “it prints v.u=4” and “it prints v.u=3”: $ gcc t.c && ./a.out v.u=4 $ gcc -O2...
Read More… but that's only because I created it. If you are more familiar than me with Wikipedia etiquette feel free to adjust edit or delete this page. Also although a Wikipedia account is necessary to create a page I think it is not required for editing so you can add...
Read MoreIntroduction It started innocently enough. My colleagues were talking of supporting target compilers with excess floating-point precision. We saw that if analyzing programs destined to be compiled with strict IEEE 754 compilers was a lovely Spring day at the beach analyzing for compilers that allow excess precision was Normandy in...
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