| 1 | // RUN: %clang_cc1 -triple x86_64-apple-darwin -verify -fsyntax-only %s -Wdouble-promotion |
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| 2 | |
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| 3 | float ReturnFloatFromDouble(double d) { |
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| 4 | return d; |
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| 5 | } |
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| 6 | |
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| 7 | float ReturnFloatFromLongDouble(long double ld) { |
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| 8 | return ld; |
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| 9 | } |
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| 10 | |
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| 11 | double ReturnDoubleFromLongDouble(long double ld) { |
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| 12 | return ld; |
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| 13 | } |
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| 14 | |
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| 15 | double ReturnDoubleFromFloat(float f) { |
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| 16 | return f; //expected-warning{{implicit conversion increases floating-point precision: 'float' to 'double'}} |
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| 17 | } |
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| 18 | |
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| 19 | long double ReturnLongDoubleFromFloat(float f) { |
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| 20 | return f; //expected-warning{{implicit conversion increases floating-point precision: 'float' to 'long double'}} |
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| 21 | } |
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| 22 | |
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| 23 | long double ReturnLongDoubleFromDouble(double d) { |
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| 24 | return d; //expected-warning{{implicit conversion increases floating-point precision: 'double' to 'long double'}} |
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| 25 | } |
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| 26 | |
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| 27 | void Assignment(float f, double d, long double ld) { |
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| 28 | d = f; //expected-warning{{implicit conversion increases floating-point precision: 'float' to 'double'}} |
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| 29 | ld = f; //expected-warning{{implicit conversion increases floating-point precision: 'float' to 'long double'}} |
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| 30 | ld = d; //expected-warning{{implicit conversion increases floating-point precision: 'double' to 'long double'}} |
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| 31 | f = d; |
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| 32 | f = ld; |
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| 33 | d = ld; |
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| 34 | } |
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| 35 | |
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| 36 | extern void DoubleParameter(double); |
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| 37 | extern void LongDoubleParameter(long double); |
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| 38 | |
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| 39 | void ArgumentPassing(float f, double d) { |
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| 40 | DoubleParameter(f); // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'double'}} |
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| 41 | LongDoubleParameter(f); // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'long double'}} |
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| 42 | LongDoubleParameter(d); // expected-warning{{implicit conversion increases floating-point precision: 'double' to 'long double'}} |
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| 43 | } |
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| 44 | |
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| 45 | void BinaryOperator(float f, double d, long double ld) { |
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| 46 | f = f * d; // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'double'}} |
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| 47 | f = d * f; // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'double'}} |
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| 48 | f = f * ld; // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'long double'}} |
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| 49 | f = ld * f; // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'long double'}} |
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| 50 | d = d * ld; // expected-warning{{implicit conversion increases floating-point precision: 'double' to 'long double'}} |
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| 51 | d = ld * d; // expected-warning{{implicit conversion increases floating-point precision: 'double' to 'long double'}} |
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| 52 | } |
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| 53 | |
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| 54 | void MultiplicationAssignment(float f, double d, long double ld) { |
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| 55 | d *= f; // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'double'}} |
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| 56 | ld *= f; // expected-warning{{implicit conversion increases floating-point precision: 'float' to 'long double'}} |
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| 57 | ld *= d; // expected-warning{{implicit conversion increases floating-point precision: 'double' to 'long double'}} |
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| 58 | |
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| 59 | // FIXME: These cases should produce warnings as above. |
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| 60 | f *= d; |
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| 61 | f *= ld; |
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| 62 | d *= ld; |
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| 63 | } |
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| 64 | |
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| 65 | // FIXME: As with a binary operator, the operands to the conditional operator are |
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| 66 | // converted to a common type and should produce a warning. |
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| 67 | void ConditionalOperator(float f, double d, long double ld, int i) { |
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| 68 | f = i ? f : d; |
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| 69 | f = i ? d : f; |
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| 70 | f = i ? f : ld; |
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| 71 | f = i ? ld : f; |
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| 72 | d = i ? d : ld; |
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| 73 | d = i ? ld : d; |
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| 74 | } |
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| 75 | |
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