135 lines
4.1 KiB
Markdown
135 lines
4.1 KiB
Markdown
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# MathSwap
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Change the order of bytes in the [ushort](/en/docs/basis/types/integer/integertypes) type value.
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```
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ushort MathSwap(
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ushort value // value
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);
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```
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Parameters
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value
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[in] Value for changing the order of bytes.
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Return Value
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ushort value with the reverse byte order.
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# MathSwap
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Change the order of bytes in the [uint](/en/docs/basis/types/integer/integertypes) type value.
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```
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uint MathSwap(
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uint value // value
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);
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```
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Parameters
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value
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[in] Value for changing the order of bytes.
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Return Value
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uint value with the reverse byte order.
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# MathSwap
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Change the order of bytes in the [ulong](/en/docs/basis/types/integer/integertypes) type value.
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```
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ulong MathSwap(
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ulong value // value
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);
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```
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Parameters
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value
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[in] Value for changing the order of bytes.
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Return Value
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ulong value with the reverse byte order.
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Example:
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```
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#property script_show_inputs
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input ulong InpLongValue = 1; // Enter any ulong value here
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input uint InpIntValue = 2; // Enter any uint value here
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input ushort InpShortValue = 3; // Enter any ushort value here
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//+------------------------------------------------------------------+
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//| Script program start function |
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//+------------------------------------------------------------------+
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void OnStart()
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{
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//--- print the values entered and converted by MathSwap() in decimal and binary representation in the journal
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Print(ValueDescription(InpLongValue));
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Print(ValueDescription(InpIntValue));
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Print(ValueDescription(InpShortValue));
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/*
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result:
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ulong value: 1
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ulong value: 72057594037927936 using MathSwap()
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binary ulong value: 0000000000000000000000000000000000000000000000000000000000000001
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binary ulong value: 0000000100000000000000000000000000000000000000000000000000000000 using MathSwap()
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uint value: 2
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uint value: 33554432 using MathSwap()
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binary uint value: 00000000000000000000000000000010
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binary uint value: 00000010000000000000000000000000 using MathSwap()
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ushort value: 3
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ushort value: 768 using MathSwap()
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binary ushort value: 0000000000000011
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binary ushort value: 0000001100000000 using MathSwap()
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*/
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}
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//+------------------------------------------------------------------+
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//| Return the text describing the variable values |
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//+------------------------------------------------------------------+
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template <typename T>
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string ValueDescription(T x)
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{
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int num_bits = sizeof(T)*8;
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string type_name = typename(T);
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string bin_x = NumberToBinaryString(x);
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string bin_swap_x = NumberToBinaryString(MathSwap(x));
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return(StringFormat("%s value: %lld\n%s value: %lld using MathSwap()\nbinary %s value: %0*s\nbinary %s value: %0*s using MathSwap()\n",
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type_name, x, type_name, MathSwap(x), type_name, num_bits, bin_x, type_name, num_bits, bin_swap_x));
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}
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//+------------------------------------------------------------------+
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//| Return the binary representation of a number as a string |
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//+------------------------------------------------------------------+
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template <typename T>
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string NumberToBinaryString(T x)
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{
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string res = "";
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int i = -1;
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uchar size = sizeof(T)*8-1;
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ulong mask = (ulong)1<<size;
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while(!((x<<++i)& mask));
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for(; i <=size; i++)
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res += !((x<<i)& mask) ? "0" : "1";
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return res;
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}
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```
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See also
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[Network functions](/en/docs/network), [SocketRead](/en/docs/network/socketread), [SocketSend](/en/docs/network/socketsend), [SocketTlsRead](/en/docs/network/sockettlsread), [SocketTlsReadAvailable](/en/docs/network/sockettlsreadavailable), [SocketTlsSend](/en/docs/network/sockettlssend)
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