src/utils/numeric_nocompile.nc

// Copyright 2026 The Dawn & Tint Authors
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#include "src/utils/numeric.h"

namespace dawn {

void TestIsDoubleValueRepresentable() {
    (void) IsDoubleValueRepresentable<double>(0.0);  // expected-error-re@numeric.h:* {{static assertion failed due to requirement '{{.*}}': Unsupported type}}
}

// Tests for checked_cast
void TestCheckedCast() {
    { [[maybe_unused]] constexpr uint32_t x = checked_cast<uint32_t>(uint64_t{0x0'FFFF'FFFF}); }
    { [[maybe_unused]] constexpr uint32_t x = checked_cast<uint32_t>(uint64_t{0x1'0000'0000}); }  // expected-error {{must be initialized by a constant expression}}
    { [[maybe_unused]] constexpr uint32_t x = checked_cast<uint32_t>(int16_t{-1}); }  // expected-error {{must be initialized by a constant expression}}

    { [[maybe_unused]] constexpr uint32_t x = checked_cast<uint32_t>(int64_t{0x0'FFFF'FFFF}); }
    { [[maybe_unused]] constexpr uint32_t x = checked_cast<uint32_t>(int64_t{0x1'0000'0000}); }  // expected-error {{must be initialized by a constant expression}}
}

// Basic test for dchecked_cast
void TestDcheckedCast() {
#ifdef DAWN_ENABLE_ASSERTS
    { [[maybe_unused]] constexpr uint32_t x = dchecked_cast<uint32_t>(int32_t{-1}); }  // expected-error {{must be initialized by a constant expression}}
#else
    { [[maybe_unused]] constexpr uint32_t x = dchecked_cast<uint32_t>(int32_t{-1}); }
#endif
}

}