mirror of https://github.com/YosysHQ/yosys.git
39 lines
1.0 KiB
C++
39 lines
1.0 KiB
C++
#include <cassert>
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#include <cstdint>
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#include "cxxrtl/cxxrtl.h"
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int main()
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{
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{
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// shl exceeding Bits should be masked
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cxxrtl::value<6> a(1u);
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cxxrtl::value<6> b(8u);
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cxxrtl::value<6> c = a.shl(b);
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assert(c.get<uint64_t>() == 0);
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}
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{
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// sshr of unreasonably large size should sign extend correctly
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cxxrtl::value<64> a(0u, 0x80000000u);
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cxxrtl::value<64> b(0u, 1u);
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cxxrtl::value<64> c = a.sshr(b);
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assert(c.get<uint64_t>() == 0xffffffffffffffffu);
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}
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{
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// sshr of exteeding Bits should sign extend correctly
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cxxrtl::value<8> a(0x80u);
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cxxrtl::value<8> b(10u);
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cxxrtl::value<8> c = a.sshr(b);
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assert(c.get<uint64_t>() == 0xffu);
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}
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{
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// Sign extension should occur correctly
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cxxrtl::value<64> a(0x23456789u, 0x8abcdef1u);
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cxxrtl::value<8> b(32u);
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cxxrtl::value<64> c = a.sshr(b);
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assert(c.get<uint64_t>() == 0xffffffff8abcdef1u);
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}
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} |