forked from OSchip/llvm-project
58 lines
2.7 KiB
C++
58 lines
2.7 KiB
C++
// 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
|