2nd/10_Wiki/Dev/Topic_CPP/CPP_Math.md

id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit

id	title	category	status	verification_status	canonical_id	aliases	duplicate_of	source_trust_level	confidence_score	created_at	updated_at	review_reason	merge_history	tags	raw_sources	applied_in	github_commit
cpp-math	C++ Math	Programming_Language	draft	conceptual		max min functions cmath library C++ 수학 함수		B	0.83	2026-07-04	2026-07-04			cpp programming-language w3schools math cmath	https://www.w3schools.com/cpp/cpp_math.asp

CPP Math

🎯 한 줄 통찰 (One-line insight)

max() and min() are used with NO header include shown in the source's own examples, while sqrt(), round(), and log() explicitly require #include <cmath> — a distinction the source draws implicitly through its section structure (max/min presented first, standalone; <cmath> functions grouped separately under their own header requirement), suggesting C++ split basic comparison-style math from the broader mathematical function library across different availability boundaries. [S1]

🧠 핵심 개념 (Core concepts)

• max(x, y) — returns the higher of two values. [S1]
• min(x, y) — returns the lower of two values. [S1]
• <cmath> header — required for broader math functions: sqrt() (square root), round() (rounds a number), log() (natural logarithm), and more. [S1]

📖 세부 내용 (Details)

• Basic max/min: cout << max(5, 10); cout << min(5, 10);. [S1]
• cmath-based functions: #include <cmath> cout << sqrt(64); cout << round(2.6); cout << log(2);. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

• 현재까지 발견된 모순 사항 없음 (No contradictions found in available sources).

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — sqrt/round/log 등 cmath 함수들이 이후 챕터의 다양한 계산 로직에서 재사용될 수 있는 기본 도구다. [S1]

💻 코드 패턴 (Code patterns)

Using cmath library functions for square root, rounding, and logarithm (C++):

#include <cmath>
cout << sqrt(64);   // 8
cout << round(2.6); // 3
cout << log(2);     // 0.693147...

✅ 검증 상태 및 신뢰도

• 상태: draft
• 검증 단계: conceptual
• 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
• 신뢰 점수: 0.83
• 중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

• 상위/루트: C++ Tutorial
• 관련 개념: CPP Strings Numbers, CPP Booleans, C Math
• 참조 맥락: 수학 섹션 유일 챕터 — 불리언(Booleans) 섹션으로 이어짐.

📚 출처 (Sources)

• [S1] W3Schools — C++ Math — https://www.w3schools.com/cpp/cpp_math.asp

📝 변경 이력 (Change history)

• 2026-07-04: Initial draft synthesized from the W3Schools "C++ Math" page (Astra wiki-curation, P-Reinforce v3.1 format).