Eric Postpischil

Eric Postpischil has asked 35 questions and find answers to 891 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

Double Precision when a float value is passed in double
Could variable zero-initialization reduce performances?
Exact meaning of == in C
How is the sizeof operator evaluated
C bitwise AND gives different result with -O0 and -O2
How does static linking without an archive file work?
C#: Wrong result when converting expression with floats to int
C MSB to LSB explanation
Is it undefined behavior to cast from a struct with a flexible array member to an otherwise identical one without?
What effect does Optimisation in GCC compiler have on overflow conditions