75 lines
3.2 KiB
C
75 lines
3.2 KiB
C
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -verify -fsyntax-only %s -Wdouble-promotion
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float ReturnFloatFromDouble(double d) {
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return d;
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}
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float ReturnFloatFromLongDouble(long double ld) {
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return ld;
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}
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double ReturnDoubleFromLongDouble(long double ld) {
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return ld;
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}
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double ReturnDoubleFromFloat(float f) {
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return f; //expected-warning{{implicit conversion increases floating-point precision: 'float' to 'double'}}
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}
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long double ReturnLongDoubleFromFloat(float f) {
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return f; //expected-warning{{implicit conversion increases floating-point precision: 'float' to 'long double'}}
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}
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long double ReturnLongDoubleFromDouble(double d) {
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return d; //expected-warning{{implicit conversion increases floating-point precision: 'double' to 'long double'}}
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}
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void Assignment(float f, double d, long double ld) {
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d = f; //expected-warning{{implicit conversion increases floating-point precision: 'float' to 'double'}}
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ld = f; //expected-warning{{implicit conversion increases floating-point precision: 'float' to 'long double'}}
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ld = d; //expected-warning{{implicit conversion increases floating-point precision: 'double' to 'long double'}}
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f = d;
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f = ld;
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d = ld;
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}
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extern void DoubleParameter(double);
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extern void LongDoubleParameter(long double);
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void ArgumentPassing(float f, double d) {
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DoubleParameter(f); // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'double'}}
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LongDoubleParameter(f); // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'long double'}}
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LongDoubleParameter(d); // expected-warning{{implicit conversion increases floating-point precision: 'double' to 'long double'}}
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}
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void BinaryOperator(float f, double d, long double ld) {
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f = f * d; // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'double'}}
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f = d * f; // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'double'}}
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f = f * ld; // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'long double'}}
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f = ld * f; // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'long double'}}
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d = d * ld; // expected-warning{{implicit conversion increases floating-point precision: 'double' to 'long double'}}
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d = ld * d; // expected-warning{{implicit conversion increases floating-point precision: 'double' to 'long double'}}
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}
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void MultiplicationAssignment(float f, double d, long double ld) {
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d *= f; // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'double'}}
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ld *= f; // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'long double'}}
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ld *= d; // expected-warning{{implicit conversion increases floating-point precision: 'double' to 'long double'}}
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// FIXME: These cases should produce warnings as above.
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f *= d;
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f *= ld;
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d *= ld;
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}
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// FIXME: As with a binary operator, the operands to the conditional operator are
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// converted to a common type and should produce a warning.
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void ConditionalOperator(float f, double d, long double ld, int i) {
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f = i ? f : d;
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f = i ? d : f;
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f = i ? f : ld;
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f = i ? ld : f;
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d = i ? d : ld;
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d = i ? ld : d;
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}
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