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34 lines
2.0 KiB
34 lines
2.0 KiB
#include <gtest/gtest.h>
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#include <fxdiv.h>
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TEST(uint32_t, cases) {
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EXPECT_EQ(UINT32_C(0), fxdiv_mulhi_uint32_t(UINT32_C(0), UINT32_C(0)));
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EXPECT_EQ(UINT32_C(0), fxdiv_mulhi_uint32_t(UINT32_C(1), UINT32_C(1)));
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EXPECT_EQ(UINT32_C(0), fxdiv_mulhi_uint32_t(UINT32_C(1), UINT32_MAX));
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EXPECT_EQ(UINT32_C(0), fxdiv_mulhi_uint32_t(UINT32_MAX, UINT32_C(1)));
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EXPECT_EQ(UINT32_C(1), fxdiv_mulhi_uint32_t(UINT32_C(65536), UINT32_C(65536)));
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EXPECT_EQ(UINT32_MAX - UINT32_C(1), fxdiv_mulhi_uint32_t(UINT32_MAX, UINT32_MAX));
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EXPECT_EQ(UINT32_C(28389652), fxdiv_mulhi_uint32_t(UINT32_C(123456789), UINT32_C(987654321)));
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EXPECT_EQ(UINT32_C(28389652), fxdiv_mulhi_uint32_t(UINT32_C(987654321), UINT32_C(123456789)));
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}
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TEST(uint64_t, cases) {
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EXPECT_EQ(UINT64_C(0), fxdiv_mulhi_uint64_t(UINT64_C(0), UINT64_C(0)));
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EXPECT_EQ(UINT64_C(0), fxdiv_mulhi_uint64_t(UINT64_C(1), UINT64_C(1)));
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EXPECT_EQ(UINT64_C(0), fxdiv_mulhi_uint64_t(UINT64_C(1), UINT64_MAX));
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EXPECT_EQ(UINT64_C(0), fxdiv_mulhi_uint64_t(UINT64_MAX, UINT64_C(1)));
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EXPECT_EQ(UINT64_C(1), fxdiv_mulhi_uint64_t(UINT64_C(4294967296), UINT64_C(4294967296)));
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EXPECT_EQ(UINT64_MAX - UINT64_C(1), fxdiv_mulhi_uint64_t(UINT64_MAX, UINT64_MAX));
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EXPECT_EQ(UINT64_C(66099812259603), fxdiv_mulhi_uint64_t(UINT64_C(12345678987654321), UINT64_C(98765432123456789)));
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EXPECT_EQ(UINT64_C(66099812259603), fxdiv_mulhi_uint64_t(UINT64_C(98765432123456789), UINT64_C(12345678987654321)));
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}
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TEST(size_t, cases) {
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EXPECT_EQ(0, fxdiv_mulhi_size_t(0, 0));
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EXPECT_EQ(0, fxdiv_mulhi_size_t(1, 1));
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EXPECT_EQ(0, fxdiv_mulhi_size_t(1, SIZE_MAX));
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EXPECT_EQ(0, fxdiv_mulhi_size_t(SIZE_MAX, 1));
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EXPECT_EQ(SIZE_MAX - 1, fxdiv_mulhi_size_t(SIZE_MAX, SIZE_MAX));
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}
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