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116 lines
3 KiB
D
116 lines
3 KiB
D
// RUNNABLE_PHOBOS_TEST
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import core.math;
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import core.bitop;
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version (DigitalMars)
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{
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version (X86_64)
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version = AnyX86;
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else version (X86)
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version = AnyX86;
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}
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bool isClose(real lhs, real rhs, real maxRelDiff = 1e-09L, real maxAbsDiff = 0.0)
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{
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if (lhs == rhs)
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return true;
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if (lhs == lhs.infinity || rhs == rhs.infinity ||
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lhs == -lhs.infinity || rhs == -rhs.infinity)
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return false;
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auto diff = fabs(lhs - rhs);
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return diff <= maxRelDiff*fabs(lhs)
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|| diff <= maxRelDiff*fabs(rhs)
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|| diff <= maxAbsDiff;
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}
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/*******************************************/
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void test1()
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{
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auto f = 6.8L;
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assert(sin(f) == sin(6.8L));
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static assert(isClose(sin(6.8L), 0x1.f9f8d9aea10fdf1cp-2));
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f = 6.8L;
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assert(cos(f) == cos(6.8L));
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static assert(isClose(cos(6.8L), 0x1.bd21aaf88dcfa13ap-1));
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}
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/*******************************************/
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void test2()
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{
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float i = 3;
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i = i ^^ 2;
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assert(i == 9);
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int j = 2;
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j = j ^^ 1;
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assert(j == 2);
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i = 4;
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i = i ^^ .5;
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assert(i == 2);
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}
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/**** https://issues.dlang.org/show_bug.cgi?id=5703 ****/
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static assert({
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int a = 0x80;
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int f = bsf(a);
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int r = bsr(a);
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a = 0x22;
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assert(bsf(a)==1);
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assert(bsr(a)==5);
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a = 0x8000000;
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assert(bsf(a)==27);
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assert(bsr(a)==27);
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a = 0x13f562c0;
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assert(bsf(a) == 6);
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assert(bsr(a) == 28);
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assert(bswap(0xAABBCCDD) == 0xDDCCBBAA);
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return true;
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}());
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/*******************************************/
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void test3()
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{
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version (AnyX86)
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{
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static assert( _popcnt( cast(ushort)0 ) == 0 );
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static assert( _popcnt( cast(ushort)7 ) == 3 );
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static assert( _popcnt( cast(ushort)0xAA )== 4);
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static assert( _popcnt( cast(ushort)0xFFFF ) == 16 );
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static assert( _popcnt( cast(ushort)0xCCCC ) == 8 );
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static assert( _popcnt( cast(ushort)0x7777 ) == 12 );
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static assert( _popcnt( cast(uint)0 ) == 0 );
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static assert( _popcnt( cast(uint)7 ) == 3 );
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static assert( _popcnt( cast(uint)0xAA )== 4);
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static assert( _popcnt( cast(uint)0x8421_1248 ) == 8 );
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static assert( _popcnt( cast(uint)0xFFFF_FFFF ) == 32 );
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static assert( _popcnt( cast(uint)0xCCCC_CCCC ) == 16 );
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static assert( _popcnt( cast(uint)0x7777_7777 ) == 24 );
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version (X86_64)
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{
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static assert( _popcnt( cast(ulong)0 ) == 0 );
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static assert( _popcnt( cast(ulong)7 ) == 3 );
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static assert( _popcnt( cast(ulong)0xAA )== 4);
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static assert( _popcnt( cast(ulong)0x8421_1248 ) == 8 );
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static assert( _popcnt( cast(ulong)0xFFFF_FFFF_FFFF_FFFF ) == 64 );
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static assert( _popcnt( cast(ulong)0xCCCC_CCCC_CCCC_CCCC ) == 32 );
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static assert( _popcnt( cast(ulong)0x7777_7777_7777_7777 ) == 48 );
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}
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}
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}
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/*******************************************/
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int main()
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{
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test1();
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test2();
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test3();
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return 0;
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}
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