Revert partially the previous commit:
The two formulas are true iff 2n = 2 <=> n = 1.
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@ -9350,18 +9350,15 @@ void Tokenizer::simplifyMathExpressions()
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tok->str("0");
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}
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//Pythagorean trigonometric identity: pow(sin(x),2n)+pow(cos(x),2n) = 1
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//Hyperbolic identity: pow(sinh(x),2n)-pow(cosh(x),2n) = -1
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//2n = any even number
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//Pythagorean trigonometric identity: pow(sin(x),2)+pow(cos(x),2) = 1
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//Hyperbolic identity: pow(sinh(x),2)-pow(cosh(x),2) = -1
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if (Token::simpleMatch(tok, "pow (")) {
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if (Token::simpleMatch(tok->tokAt(2), "sin (")) {
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Token *tok2 = tok->linkAt(3);
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if (!Token::Match(tok2, ") , %num% ) + pow ( cos (") ||
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(MathLib::toLongNumber(tok2->strAt(2)) & 1) == 1)
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if (!Token::simpleMatch(tok2, ") , 2 ) + pow ( cos ("))
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continue;
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Token *tok3 = tok2->tokAt(8);
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if (!Token::Match(tok3->link(), ") , %num% )") ||
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tok3->link()->strAt(2) != tok2->strAt(2))
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if (!Token::simpleMatch(tok3->link(), ") , 2 )"))
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continue;
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if (tok->tokAt(3)->stringifyList(tok2->next()) == tok3->stringifyList(tok3->link()->next())) {
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Token::eraseTokens(tok, tok3->link()->tokAt(4));
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@ -9369,12 +9366,10 @@ void Tokenizer::simplifyMathExpressions()
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}
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} else if (Token::simpleMatch(tok->tokAt(2), "sinh (")) {
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Token *tok2 = tok->linkAt(3);
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if (!Token::Match(tok2, ") , %num% ) - pow ( cosh (") ||
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(MathLib::toLongNumber(tok2->strAt(2)) & 1) == 1)
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if (!Token::simpleMatch(tok2, ") , 2 ) - pow ( cosh (") )
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continue;
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Token *tok3 = tok2->tokAt(8);
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if (!Token::Match(tok3->link(), ") , %num% )") ||
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tok3->link()->strAt(2) != tok2->strAt(2))
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if (!Token::simpleMatch(tok3->link(), ") , 2 )"))
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continue;
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if (tok->tokAt(3)->stringifyList(tok2->next()) == tok3->stringifyList(tok3->link()->next())) {
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Token::eraseTokens(tok, tok3->link()->tokAt(4));
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@ -7727,8 +7727,6 @@ private:
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" std::cout<<pow(sinh(x),2)-pow(cosh(x),2);\n"
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" std::cout<<pow(sin(x*y+z),2)+pow(cos(x*y+z),2);\n"
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" std::cout<<pow(sinh(x*y+z),2)-pow(cosh(x*y+z),2);\n"
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" std::cout<<pow(sin(x),4)+pow(cos(x),4);\n"
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" std::cout<<pow(sinh(x),10)-pow(cosh(x),10);\n"
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"}";
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const char expected1[] = "void foo ( ) {\n"
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@ -7744,8 +7742,6 @@ private:
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"std :: cout << -1 ;\n"
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"std :: cout << 1 ;\n"
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"std :: cout << -1 ;\n"
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"std :: cout << 1 ;\n"
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"std :: cout << -1 ;\n"
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"}";
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ASSERT_EQUALS(expected1, tokenizeAndStringify(code1));
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