Eric Postpischil

Eric Postpischil has asked 35 questions and find answers to 906 problems.

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About

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

Eric Postpischil questions

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?
Can a pointer to an incomplete type be incomplete?

Eric Postpischil answers

Strange behavior of printf when converting a pointer to a double
How is a label in between `else-if` allowed?
What happens behind the scenes when you declare a variable in C (and other languages)?
Inconsistencies in sign extension when shifting signed int vs short
Typedef (anonymous) struct array of size 1
Casting C float array to struct of floats and vice-versa?
Is this C program with two struct definitions, involving a flexible array member, defined?
When is it necessary or meaningful to write &f for a function f or *fp for a function pointer fp (except in: sizeof &f)?
Legal to initialize uint8_t array with string literal?
Most memory-efficient way to define hundreds of double constants