| // RUN: %check_clang_tidy %s cppcoreguidelines-narrowing-conversions %t \ |
| // RUN: -- -- -target x86_64-unknown-linux -fsigned-char |
| |
| namespace floats { |
| |
| void narrow_constant_floating_point_to_int_not_ok(double d) { |
| int i = 0; |
| i += 0.5; |
| // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from constant 'double' to 'int' [cppcoreguidelines-narrowing-conversions] |
| i += 0.5f; |
| // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from constant 'float' to 'int' [cppcoreguidelines-narrowing-conversions] |
| i *= 0.5f; |
| // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from constant 'float' to 'int' [cppcoreguidelines-narrowing-conversions] |
| i /= 0.5f; |
| // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from constant 'float' to 'int' [cppcoreguidelines-narrowing-conversions] |
| i += (double)0.5f; |
| // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from constant 'double' to 'int' [cppcoreguidelines-narrowing-conversions] |
| i += 2.0; |
| i += 2.0f; |
| } |
| |
| double operator"" _double(unsigned long long); |
| |
| float narrow_double_to_float_return() { |
| return 0.5; |
| } |
| |
| void narrow_double_to_float_not_ok(double d) { |
| float f; |
| f = d; |
| // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: narrowing conversion from 'double' to 'float' [cppcoreguidelines-narrowing-conversions] |
| f = 15_double; |
| // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: narrowing conversion from 'double' to 'float' [cppcoreguidelines-narrowing-conversions] |
| f += d; |
| // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from 'double' to 'float' [cppcoreguidelines-narrowing-conversions] |
| f = narrow_double_to_float_return(); |
| } |
| |
| void narrow_fp_constants() { |
| float f; |
| f = 0.5; // [dcl.init.list] 7.2 : in-range fp constant to narrower float is not a narrowing. |
| |
| f = __builtin_huge_valf(); // max float is not narrowing. |
| f = -__builtin_huge_valf(); // -max float is not narrowing. |
| f = __builtin_inff(); // float infinity is not narrowing. |
| f = __builtin_nanf("0"); // float NaN is not narrowing. |
| |
| f = __builtin_huge_val(); // max double is not within-range of float. |
| // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: narrowing conversion from constant 'double' to 'float' [cppcoreguidelines-narrowing-conversions] |
| f = -__builtin_huge_val(); // -max double is not within-range of float. |
| // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: narrowing conversion from constant 'double' to 'float' [cppcoreguidelines-narrowing-conversions] |
| f = __builtin_inf(); // double infinity is not within-range of float. |
| // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: narrowing conversion from constant 'double' to 'float' [cppcoreguidelines-narrowing-conversions] |
| f = __builtin_nan("0"); // double NaN is not narrowing. |
| } |
| |
| } // namespace floats |