gmp_libmpn_addmul_1 Method |
Multiply {s1p, n} and s2limb, and add the n least significant limbs of the product to {rp, n} and write the result to rp.
Namespace:
Math.Gmp.Native
Assembly:
Math.Gmp.Native (in Math.Gmp.Native.dll) Version: 1.0.0.0 (1.0.0.0)
Syntax public static mp_limb_t mpn_addmul_1(
mp_ptr rp,
mp_ptr s1p,
mp_size_t n,
mp_limb_t s2limb
)
Public Shared Function mpn_addmul_1 (
rp As mp_ptr,
s1p As mp_ptr,
n As mp_size_t,
s2limb As mp_limb_t
) As mp_limb_t
public:
static mp_limb_t mpn_addmul_1(
mp_ptr^ rp,
mp_ptr^ s1p,
mp_size_t n,
mp_limb_t s2limb
)
static member mpn_addmul_1 :
rp : mp_ptr *
s1p : mp_ptr *
n : mp_size_t *
s2limb : mp_limb_t -> mp_limb_t
Parameters
- rp
- Type: Math.Gmp.Nativemp_ptr
The result integer. - s1p
- Type: Math.Gmp.Nativemp_ptr
The first operand integer. - n
- Type: Math.Gmp.Nativemp_size_t
The number of limbs in s1p. - s2limb
- Type: Math.Gmp.Nativemp_limb_t
The second operand integer.
Return Value
Type:
mp_limb_tReturn the most significant limb of the product, plus carry-out from the addition.
Remarks
{s1p, n} and {rp, n} are allowed
to overlap provided rp ≤ s1p.
This is a low-level function that is a building block for general multiplication as well as other operations in GMP.
It is written in assembly for most CPUs.
Examples
mp_ptr s1p = new mp_ptr(new uint[] { 0xffffffff, 0xffffffff });
mp_ptr rp = new mp_ptr(new uint[] { 0x00000002, 0x00000000 });
mp_ptr result = new mp_ptr(new uint[] { 0x00000000, 0x00000000 });
mp_limb_t carry = gmp_lib.mpn_addmul_1(rp, s1p, s1p.Size, 2);
Assert.IsTrue(carry == 0x02);
Assert.IsTrue(rp.SequenceEqual(result));
gmp_lib.free(rp, s1p, result);
Dim s1p As New mp_ptr(New UInteger() { &HffffffffUI, &HffffffffUI})
Dim rp As New mp_ptr(New UInteger() { &H2, &H0})
Dim result As New mp_ptr(New UInteger() { &H0, &H0})
Dim carry As mp_limb_t = gmp_lib.mpn_addmul_1(rp, s1p, s1p.Size, 2)
Assert.IsTrue(carry = &H2)
Assert.IsTrue(rp.SequenceEqual(result))
gmp_lib.free(rp, s1p, 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