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floating-point

Floating-point representation, endianness, and portability

ProgrammingC nan(tagp) string rationale and IEEE 754 payloads

Why C's nan(const char *tagp) accepts a string: WG14 rationale, how tagp maps to IEEE 754 QNaN payloads, common parsing strategies and portability implications.

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ProgrammingC Floating-Point == Comparison Accuracy with 0.1 Steps

Learn why C's == operator fails for floating-point numbers like 0.1 increments due to binary precision. Use epsilon comparison, rounding, fixed-point scaling, and GSL for reliable equality checks and numerical solving.

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