gmp_lib.mpz_popcount Method

GMP Native Interface for .NET

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gmp_libmpz_popcount Method
Return the population count of op.

Namespace:  Math.Gmp.Native
Assembly:  Math.Gmp.Native (in Math.Gmp.Native.dll) Version: 1.0.0.0 (1.0.0.0)
Syntax
Copy
public static mp_bitcnt_t mpz_popcount(
	mpz_t op
)
Public Shared Function mpz_popcount ( 
	op As mpz_t
) As mp_bitcnt_t
public:
static mp_bitcnt_t mpz_popcount(
	mpz_t^ op
)
static member mpz_popcount : 
        op : mpz_t -> mp_bitcnt_t

Parameters

op
Type: Math.Gmp.Nativempz_t
The operand integer.

Return Value

Type: mp_bitcnt_t
If op ≥ 0, return the population count of op, which is the number of 1 bits in the binary representation. If op < 0, the number of 1s is infinite, and the return value is the largest possible mp_bitcnt_t.
Remarks

The function behaves as if twos complement arithmetic were used (although sign-magnitude is the actual implementation). The least significant bit is number 0.

Examples
Copy
// Create, initialize, and set the value of op to 63.
mpz_t op = new mpz_t();
gmp_lib.mpz_init_set_ui(op, 63U);

// Assert that op has 6 one bits.
Assert.IsTrue(gmp_lib.mpz_popcount(op) == 6U);

// Release unmanaged memory allocated for op.
gmp_lib.mpz_clears(op);
' Create, initialize, and set the value of op to 63.
Dim op As New mpz_t()
gmp_lib.mpz_init_set_ui(op, 63UI)

' Assert that op has 6 one bits.
Assert.IsTrue(gmp_lib.mpz_popcount(op) = 6UI)

' Release unmanaged memory allocated for op.

No code example is currently available or this language may not be supported.

No code example is currently available or this language may not be supported.

See Also
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