Eric Postpischil

Eric Postpischil has asked 35 questions and find answers to 837 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

Comparing size_t to -1 [duplicate]
In C, what is the size of a long for a 32-bit machine and for a 64-bit machine? [duplicate]
Why does shifting by full width behave differently for constant versus variable?
Is is possible to cast a simple block of code to a struct?
What is the scope of `fesetround()`?
How does printing a union itself and not its member work in C?
Floating Point Arithmetic: Deriving Wobble [duplicate]
Why does using the %ebx register cause a segmentation fault in my assembly code
Allowed characters as macro parameters in C
Is there a branchless way to move number towards another number without exceeding it?