Eric Postpischil

Eric Postpischil has asked 36 questions and find answers to 980 problems.

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About

Senior software engineer in Apple’s Vector and Numerics Group (retired).

Eric Postpischil questions

Why do GCC and Clang produce different output with variable length array?
How to fix "variable previously declared 'static' redeclared 'extern' error"? [duplicate]
Is an fscanf/scanf/sscanf conversion specification with assignment suppressed not a conversion?
Is GCC warning on const qualifier correct?
Is assigning to a union member from a different member in the same union defined by the C standard?
Why is _Alignof missing from the rule about converting an array to a pointer?
Why was SIGFPE used for integer arithmetic exceptions?
Is a redeclaration of an untagged structure a compatible type?
May C evaluate with multiple floating-point formats?
How are multiple prior declarations resolved for a new declaration with extern?

Eric Postpischil answers

Understanding memory ownership models in C
Where in the standard does it say that when you do bitwise operations, it will behave like big-endian?
Is the letter "f" necessary if the decimal point is written? [duplicate]
Is there a way to read a character from an array and then lookup it's value in a predefined enum in c?
How can I distinguish a pointer from a dereference in C?
Can ptrdiff_t always store the size of an object in bytes?
Optimization of float power of 2 division
Confused about getchar function and EOF
Why does GCC accept `foo[0]` but not `*foo` as a constant?
What do you call "#" in C and C++?