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// RUN: %target-swift-frontend -emit-sil -primary-file %s -o /dev/null -verify
//
// REQUIRES: !(CPU=i386 || CPU=x86_64)
//
// These are tests for diagnostics produced by constant propagation pass
// on floating-point operations that are specific to non-x86 architectures,
// which do not support Float80.
import StdlibUnittest
func testFPToIntConversion() {
_blackHole(Int8(1E309)) // expected-error {{invalid conversion: '1E309' overflows 'Int8'}}
// expected-warning@-1 {{'1E309' overflows to inf because its magnitude exceeds the limits of a float literal}}
_blackHole(UInt8(-1E309)) // expected-error {{negative literal '-1E309' cannot be converted to 'UInt8'}}
// expected-warning@-1 {{'-1E309' overflows to -inf because its magnitude exceeds the limits of a float literal}}
_blackHole(Int64(1E309)) // expected-error {{invalid conversion: '1E309' overflows 'Int64'}}
// expected-warning@-1 {{'1E309' overflows to inf because its magnitude exceeds the limits of a float literal}}
_blackHole(UInt64(-1E309)) // expected-error {{negative literal '-1E309' cannot be converted to 'UInt64'}}
// expected-warning@-1 {{'-1E309' overflows to -inf because its magnitude exceeds the limits of a float literal}}
}
func testFloatConvertOverflow() {
let f1: Float = 1E309 // expected-warning {{'1E309' overflows to inf because its magnitude exceeds the limits of a float literal}}
_blackHole(f1)
let f2: Float32 = -1.0E999 // expected-warning {{'-1.0E999' overflows to -inf because its magnitude exceeds the limits of a float literal}}
_blackHole(f2)
let d4: Double = 1E309 // expected-warning {{'1E309' overflows to inf because its magnitude exceeds the limits of a float literal}}
_blackHole(d4)
let d6: Float64 = -1.0E999 // expected-warning {{'-1.0E999' overflows to -inf because its magnitude exceeds the limits of a float literal}}
_blackHole(d6)
let d8: Float64 = -1.7976931348623159E+308 // expected-warning {{'-1.7976931348623159E+308' overflows to -inf because its magnitude exceeds the limits of a float literal}}
_blackHole(d8)
// Warnings cannot be suppressed when a literal overflows MaxBuiltinFloatType.
_blackHole(Float(1E309)) // expected-warning {{'1E309' overflows to inf because its magnitude exceeds the limits of a float literal}}
_blackHole(Double(1E309)) // expected-warning {{'1E309' overflows to inf because its magnitude exceeds the limits of a float literal}}
}
func testFloatConvertUnderflow() {
// FIXME: False Negative: The literals that underflow MaxBuiltinFloatType
// are not detected.
let f1: Float = 1E-400
_blackHole(f1)
let d2: Double = 1E-309
_blackHole(d2)
let d4: Double = 5E-324
_blackHole(d4)
// All warnings are disabled during explicit conversions.
_blackHole(Float(1E-400))
_blackHole(Double(1E-309))
_blackHole(Double(5E-324))
}
func testHexFloatImprecision() {
// FIXME: False Negative: literals that underflow MaxBuiltinFloatType are
// not detected.
let d3: Double = 0x1.0000000000001p-1023
_blackHole(d3)
let d4: Double = 0x1.00000000000001p-1000
_blackHole(d4)
// All warnings are disabled during explicit conversions.
_blackHole(Float(0x1.00000000000001p-127))
_blackHole(Float(0x1.0000000000001p-1023))
_blackHole(Double(0x1.0000000000001p-1023))
_blackHole(Double(0x1.00000000000001p-1000))
}
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