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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)

📚 출처 (Sources)

📝 변경 이력 (Change history)

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