mirror of https://github.com/cc65/cc65.git
121 lines
1.9 KiB
C
121 lines
1.9 KiB
C
/*
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Test of bitwise-shift in preprocessor expressions.
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Note: Keep in mind that integer constants are always 32-bit in PP for cc65.
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*/
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/* Signed lhs */
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#if 1 << 16 != 0x00010000
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#error 1 << 16 != 0x00010000
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#endif
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#if 0x00010000 << -16 != 1
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#error 0x00010000 << -16 != 1
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#endif
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#if 0x10000 >> 16 != 1
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#error 0x10000 >> 16 != 1
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#endif
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#if 1 >> -16 != 0x10000
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#error 1 >> -16 != 0x10000
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#endif
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#if 1 << 32 != 0
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#error 1 << 32 != 0
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#endif
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#if 1 << -32 != 0
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#error 1 << -32 != 0
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#endif
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#if 1 >> 32 != 0
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#error 1 >> 32 != 0
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#endif
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#if 1 >> -32 != 0
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#error 1 >> -32 != 0
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#endif
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#if -1 << 32 != 0
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#error -1 << 32 != 0
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#endif
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#if -1 << -32 != -1
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#error -1 << -32 != -1
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#endif
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#if -1 >> 32 != -1
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#error -1 >> 32 != -1
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#endif
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#if -1 >> -32 != 0
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#error -1 >> -32 != 0
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#endif
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/* NOTE: 2147483648 is an UNSIGNED integer! */
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#if -1 << 2147483648 != 0
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#error -1 << 2147483648 != 0
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#endif
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/* NOTE: -2147483648 is also an UNSIGNED integer! */
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#if -1 << -2147483648 != 0
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#error -1 << -2147483648 != 0
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#endif
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#if -1 << (-2147483647 - 1) != -1
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#error -1 << (-2147483647 - 1) != -1
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#endif
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/* NOTE: 2147483648 is an UNSIGNED integer! */
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#if -1 >> 2147483648 != -1
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#error -1 >> 2147483648 != -1
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#endif
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/* NOTE: -2147483648 is also an UNSIGNED integer! */
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#if -1 >> -2147483648 != -1
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#error -1 >> -2147483648 != 0
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#endif
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#if -1 >> (-2147483647 - 1) != 0
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#error -1 >> (-2147483647 - 1) != 0
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#endif
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/* Unsigned lhs */
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#if 1U << 16 != 0x00010000
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#error 1U << 16 != 0x00010000
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#endif
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#if 0x80000000U << -16 != 0x8000
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#error 0x80000000U << -16 != 0x8000
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#endif
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#if 0x80000000U >> 16 != 0x8000
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#error 0x80000000U >> 16 != 0x8000
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#endif
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#if 1U >> -16 != 0x10000
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#error 1U >> -16 != 0x10000
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#endif
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#if -1U << 32 != 0
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#error -1U << 32 != 0
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#endif
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#if -1U << -32 != 0
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#error -1U << -32 != 0
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#endif
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#if -1U >> 32 != 0
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#error -1U >> 32 != 0
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#endif
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#if -1U >> -32 != 0
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#error -1U >> -32 != 0
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#endif
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int main(void)
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{
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return 0;
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}
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