gmp_libmpn_get_str Method |
Convert {s1p, s1n} to a raw unsigned char array at str in base base, and return the number of characters produced.
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 size_t mpn_get_str(
char_ptr str,
int base,
mp_ptr s1p,
mp_size_t s1n
)
Public Shared Function mpn_get_str (
str As char_ptr,
base As Integer,
s1p As mp_ptr,
s1n As mp_size_t
) As size_t
public:
static size_t mpn_get_str(
char_ptr str,
int base,
mp_ptr^ s1p,
mp_size_t s1n
)
static member mpn_get_str :
str : char_ptr *
base : int *
s1p : mp_ptr *
s1n : mp_size_t -> size_t
Parameters
- str
- Type: Math.Gmp.Nativechar_ptr
The result string. - base
- Type: SystemInt32
The base. - s1p
- Type: Math.Gmp.Nativemp_ptr
The operand integer. - s1n
- Type: Math.Gmp.Nativemp_size_t
The number of limbs of s1p.
Return Value
Type:
size_tThe number of characters produced at
str.
Remarks
There may be leading zeros in the string.
The string is not in ASCII; to convert it to printable format, add the ASCII codes for "0" or "A",
depending on the base and range. base can vary from 2 to 256.
The most significant limb of the input {s1p, s1n} must be non-zero.
The input {s1p, s1n} is clobbered, except when base is a power of 2,
in which case it’s unchanged.
The area at str has to have space for the largest possible number
represented by a s1n long limb array, plus one extra character.
Examples
mp_ptr s1p = new mp_ptr(new uint[] { 0x00000001, 0x00000001 });
char_ptr str = new char_ptr("xxxxxxxxxxxxxxxxx");
size_t count = gmp_lib.mpn_get_str(str, 16, s1p, s1p.Size);
byte[] s = new byte[count];
Marshal.Copy(str.ToIntPtr(), s, 0, (int)count);
Assert.IsTrue(s.SequenceEqual(new byte[] { 1, 0, 0, 0, 0, 0, 0, 0, 1 }));
gmp_lib.free(s1p);
gmp_lib.free(str);
Dim s1p As New mp_ptr(New UInteger() { &H1, &H1})
Dim str As New char_ptr("xxxxxxxxxxxxxxxxx")
Dim count As size_t = gmp_lib.mpn_get_str(str, 16, s1p, s1p.Size)
Dim s As Byte() = New Byte(count - 1) { }
Marshal.Copy(str.ToIntPtr(), s, 0, CInt(count))
Assert.IsTrue(s.SequenceEqual(New Byte() { 1, 0, 0, 0, 0, 0, 0, 0, 1}))
gmp_lib.free(s1p)
gmp_lib.free(str)
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