Eric Postpischil

Eric Postpischil has asked 36 questions and find answers to 943 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

Book says c Standard provides floating point accuracy to six significant figures, but this isnt true?
How does uint32_t guarantee 32 bits?
Why don't Kernighan and Ritchie include int for the main functions? [duplicate]
What is the difference between a floating point merge and an integer merge?
Difference Between %f and %F in printf()?
The Usual Arithmetic Conversions in "C Programming: A modern approach"
Apply FFT to a both channels of a stereo signal separately?
Is the size of a union equal to the size of its member of the largest size?
Are the addresses displayed by objdump final addresses or just offsets?
What does __attribute__((packed)) do to a union?