smartOp.cmp

Compare left and right using op.

Unlike the standard integer comparison operator, this function correctly handles negative values in signed/unsigned comparisons.
Like the standard operator, comparisons involving any floating-point nan value always return false.

Direct comparisons between boolean values and numeric ones are forbidden. Make the intent explicit:

numeric == cast(N)boolean
(numeric != 0) == boolean

bool cmp(N left, M right)
template smartOp(IntFlagPolicy policy)
pure @safe nothrow @nogc
static if(policy == IntFlagPolicy.none)
bool
cmp
(
string op
N
M
)
(
const N left
,
const M right
)
if (
isScalarType!N &&
isScalarType!M
)
int cmp(N left, M right)
alias cmp = smartOp!(IntFlagPolicy.none).cmp

Examples

import checkedint.sticky : smartOp; // smartOp.cmp() never throws

assert(uint.max == -1);
assert( smartOp.cmp!"!="(uint.max, -1));
assert(-3156 > 300u);
assert( smartOp.cmp!"<"(-3156, 300u));

assert(!smartOp.cmp!"<"(1, real.nan));
assert(!smartOp.cmp!"<"(real.nan, 1));

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checkedint smartOp functions