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misc-incorrect-roundings.cpp
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misc-incorrect-roundings.cpp
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// RUN: %check_clang_tidy %s misc-incorrect-roundings %t
void b(int x) {}
void f1() {
float f;
double d;
long double ld;
int x;
x = (d + 0.5);
// CHECK-MESSAGES: [[@LINE-1]]:7: warning: casting (double + 0.5) to integer leads to incorrect rounding; consider using lround (#include <cmath>) instead [misc-incorrect-roundings]
x = (d + 0.5f);
// CHECK-MESSAGES: [[@LINE-1]]:7: warning: casting (double + 0.5)
x = (f + 0.5);
// CHECK-MESSAGES: [[@LINE-1]]:7: warning: casting (double + 0.5)
x = (f + 0.5f);
// CHECK-MESSAGES: [[@LINE-1]]:7: warning: casting (double + 0.5)
x = (0.5 + d);
// CHECK-MESSAGES: [[@LINE-1]]:7: warning: casting (double + 0.5)
x = (0.5f + d);
// CHECK-MESSAGES: [[@LINE-1]]:7: warning: casting (double + 0.5)
x = (0.5 + ld);
// CHECK-MESSAGES: [[@LINE-1]]:7: warning: casting (double + 0.5)
x = (0.5f + ld);
// CHECK-MESSAGES: [[@LINE-1]]:7: warning: casting (double + 0.5)
x = (0.5 + f);
// CHECK-MESSAGES: [[@LINE-1]]:7: warning: casting (double + 0.5)
x = (0.5f + f);
// CHECK-MESSAGES: [[@LINE-1]]:7: warning: casting (double + 0.5)
x = (int)(d + 0.5);
// CHECK-MESSAGES: [[@LINE-1]]:12: warning: casting (double + 0.5)
x = (int)(d + 0.5f);
// CHECK-MESSAGES: [[@LINE-1]]:12: warning: casting (double + 0.5)
x = (int)(ld + 0.5);
// CHECK-MESSAGES: [[@LINE-1]]:12: warning: casting (double + 0.5)
x = (int)(ld + 0.5f);
// CHECK-MESSAGES: [[@LINE-1]]:12: warning: casting (double + 0.5)
x = (int)(f + 0.5);
// CHECK-MESSAGES: [[@LINE-1]]:12: warning: casting (double + 0.5)
x = (int)(f + 0.5f);
// CHECK-MESSAGES: [[@LINE-1]]:12: warning: casting (double + 0.5)
x = (int)(0.5 + d);
// CHECK-MESSAGES: [[@LINE-1]]:12: warning: casting (double + 0.5)
x = (int)(0.5f + d);
// CHECK-MESSAGES: [[@LINE-1]]:12: warning: casting (double + 0.5)
x = (int)(0.5 + ld);
// CHECK-MESSAGES: [[@LINE-1]]:12: warning: casting (double + 0.5)
x = (int)(0.5f + ld);
// CHECK-MESSAGES: [[@LINE-1]]:12: warning: casting (double + 0.5)
x = (int)(0.5 + f);
// CHECK-MESSAGES: [[@LINE-1]]:12: warning: casting (double + 0.5)
x = (int)(0.5f + f);
// CHECK-MESSAGES: [[@LINE-1]]:12: warning: casting (double + 0.5)
x = static_cast<int>(d + 0.5);
// CHECK-MESSAGES: [[@LINE-1]]:24: warning: casting (double + 0.5)
x = static_cast<int>(d + 0.5f);
// CHECK-MESSAGES: [[@LINE-1]]:24: warning: casting (double + 0.5)
x = static_cast<int>(ld + 0.5);
// CHECK-MESSAGES: [[@LINE-1]]:24: warning: casting (double + 0.5)
x = static_cast<int>(ld + 0.5f);
// CHECK-MESSAGES: [[@LINE-1]]:24: warning: casting (double + 0.5)
x = static_cast<int>(f + 0.5);
// CHECK-MESSAGES: [[@LINE-1]]:24: warning: casting (double + 0.5)
x = static_cast<int>(f + 0.5f);
// CHECK-MESSAGES: [[@LINE-1]]:24: warning: casting (double + 0.5)
x = static_cast<int>(0.5 + d);
// CHECK-MESSAGES: [[@LINE-1]]:24: warning: casting (double + 0.5)
x = static_cast<int>(0.5f + d);
// CHECK-MESSAGES: [[@LINE-1]]:24: warning: casting (double + 0.5)
x = static_cast<int>(0.5 + ld);
// CHECK-MESSAGES: [[@LINE-1]]:24: warning: casting (double + 0.5)
x = static_cast<int>(0.5f + ld);
// CHECK-MESSAGES: [[@LINE-1]]:24: warning: casting (double + 0.5)
x = static_cast<int>(0.5 + f);
// CHECK-MESSAGES: [[@LINE-1]]:24: warning: casting (double + 0.5)
x = static_cast<int>(0.5f + f);
// CHECK-MESSAGES: [[@LINE-1]]:24: warning: casting (double + 0.5)
// Don't warn if constant is not 0.5.
x = (int)(d + 0.6);
x = (int)(0.6 + d);
// Don't warn if binary operator is not directly beneath cast.
x = (int)(1 + (0.5 + f));
}