gmp_lib.mpn_sec_div_r Method

GMP Native Interface for .NET

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gmp_libmpn_sec_div_r Method
Set R to N modulo D, where N = {np, nn}, D = {dp, dn}, and R = {np, dn}.

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_sec_div_r(
	mp_ptr np,
	mp_size_t nn,
	mp_ptr dp,
	mp_size_t dn,
	mp_ptr tp
)
Public Shared Sub mpn_sec_div_r ( 
	np As mp_ptr,
	nn As mp_size_t,
	dp As mp_ptr,
	dn As mp_size_t,
	tp As mp_ptr
)
public:
static void mpn_sec_div_r(
	mp_ptr^ np, 
	mp_size_t nn, 
	mp_ptr^ dp, 
	mp_size_t dn, 
	mp_ptr^ tp
)
static member mpn_sec_div_r : 
        np : mp_ptr * 
        nn : mp_size_t * 
        dp : mp_ptr * 
        dn : mp_size_t * 
        tp : mp_ptr -> unit

Parameters

np
Type: Math.Gmp.Nativemp_ptr
The first operand and result integer.
nn
Type: Math.Gmp.Nativemp_size_t
The number of limbs of np.
dp
Type: Math.Gmp.Nativemp_ptr
The second operand integer
dn
Type: Math.Gmp.Nativemp_size_t
The number of limbs of dp.
tp
Type: Math.Gmp.Nativemp_ptr
The scratch operand integer.
Remarks

It is required that nn ≥ dn ≥ 1, and that dp[dn - 1] ≠ 0. This does not imply that N ≥ D since N might be zero-padded.

Note the overlapping between N and R. No other operand overlapping is allowed. The entire space occupied by N is overwritten.

This function requires scratch space of mpn_sec_div_r_itch(nn, dn) limbs to be passed in the tp parameter.

Examples
Copy
// Create multi-precision operands, and expected result.
mp_ptr np = new mp_ptr(new uint[] { 0xffffffff, 0x0000ffff });
mp_ptr dp = new mp_ptr(new uint[] { 0x00000004 });

// Create scratch space.
mp_size_t size = gmp_lib.mpn_sec_div_r_itch(np.Size, dp.Size);
mp_ptr tp = new mp_ptr(size);

// Set np = np mod dp.
gmp_lib.mpn_sec_div_r(np, np.Size, dp, dp.Size, tp);

// Assert result of operation.
Assert.IsTrue(np[0] == 3);

// Release unmanaged memory.
gmp_lib.free(np, dp, tp);
' Create multi-precision operands, and expected result.
Dim np As New mp_ptr(New UInteger() { &HffffffffUI, &Hffff})
Dim dp As New mp_ptr(New UInteger() { &H4})

' Create scratch space.
Dim size As mp_size_t = gmp_lib.mpn_sec_div_r_itch(np.Size, dp.Size)
Dim tp As New mp_ptr(size)

' Set np = np mod dp.
gmp_lib.mpn_sec_div_r(np, np.Size, dp, dp.Size, tp)

' Assert result of operation.
Assert.IsTrue(np(0) = 3)

' Release unmanaged memory.
gmp_lib.free(np, dp, tp)

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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