gmp_lib.mpn_divexact_1 Method

GMP Native Interface for .NET

previous page next page
gmp_libmpn_divexact_1 Method
Divide {sp, n} by d, expecting it to divide exactly, and writing the result to {rrp, n}.

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 void mpn_divexact_1(
	mp_ptr rp,
	mp_ptr sp,
	mp_size_t n,
	mp_limb_t d
)
Public Shared Sub mpn_divexact_1 ( 
	rp As mp_ptr,
	sp As mp_ptr,
	n As mp_size_t,
	d As mp_limb_t
)
public:
static void mpn_divexact_1(
	mp_ptr^ rp, 
	mp_ptr^ sp, 
	mp_size_t n, 
	mp_limb_t d
)
static member mpn_divexact_1 : 
        rp : mp_ptr * 
        sp : mp_ptr * 
        n : mp_size_t * 
        d : mp_limb_t -> unit

Parameters

rp
Type: Math.Gmp.Nativemp_ptr
The result integer.
sp
Type: Math.Gmp.Nativemp_ptr
The first operand integer.
n
Type: Math.Gmp.Nativemp_size_t
The number of limbs in sp and rp.
d
Type: Math.Gmp.Nativemp_limb_t
The second operand integer.
Remarks

If d doesn’t divide exactly, the value written to {rp, n} is undefined. The areas at rp and sp have to be identical or completely separate, not partially overlapping.

Examples
Copy
// Create multi-precision operands, and expected result.
mp_ptr sp = new mp_ptr(new uint[] { 0xffffffff, 0x0000ffff });
mp_ptr rp = new mp_ptr(new uint[2]);
mp_ptr result = new mp_ptr(new uint[] { 0x55555555, 0x00005555 });

// Set rp = sp / 3.
gmp_lib.mpn_divexact_1(rp, sp, sp.Size, 0x3);

// Assert result of operation.
Assert.IsTrue(rp.SequenceEqual(result));

// Release unmanaged memory.
gmp_lib.free(rp, sp, result);
' Create multi-precision operands, and expected result.
Dim sp As New mp_ptr(New UInteger() { &HffffffffUI, &Hffff})
Dim rp As New mp_ptr(New UInteger(1) { })
Dim result As New mp_ptr(New UInteger() { &H55555555, &H5555})

' Set rp = sp / 3.
gmp_lib.mpn_divexact_1(rp, sp, sp.Size, &H3)

' Assert result of operation.
Assert.IsTrue(rp.SequenceEqual(result))

' Release unmanaged memory.
gmp_lib.free(rp, sp, result)

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
previous page start next page