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