Package org.yamcs.utils

Class MilStd1750A

java.lang.Object
org.yamcs.utils.MilStd1750A
public class MilStd1750A extends Object
Some Mil1750A encoding/decoding functions. http://www.mssl.ucl.ac.uk/swift/docs/mil-std-1750a.pdf

  • Field Details

    • MAX_FLOAT_VALUE

      public static long MAX_FLOAT_VALUE

    • MIN_FLOAT_VALUE

      public static long MIN_FLOAT_VALUE

    • MAX_FLOAT32_VALUE

      public static int MAX_FLOAT32_VALUE

    • MIN_FLOAT32_VALUE

      public static int MIN_FLOAT32_VALUE

  • Constructor Details

    • MilStd1750A

      public MilStd1750A()

  • Method Details

    • encode48

      public static long encode48(double value)
      Encode double value to 48 bits 1750A floating point number. If the number is too large or too small, the MAX_FLOAT_VALUE respectively MIN_FLOAT_VALUE are returned This performs some bit operations to transform from IEEE 754 binary representation to STD 1750 binary representation. No Math.pow or other expensive operations are used.
      Parameters:
      value - - double number
      Returns:
      encoded 48 bits number (the first 16 bits of the long are 0)

    • decode48

      public static double decode48(long milstd)
      Decodes a MIL-STD 1750A 48 bit number into a double.
      Parameters:
      milstd - - number to be decoded. Only the last 48 bits are considered, the first 16 are ignored.
      Returns:
      - the decoded value

    • encode32

      public static int encode32(double value)
      Encodes a double into a MIL-STD 1750A 32 bit number. If the number to be encoded is too large or too small, the MAX_FLOAT32_VALUE respectively MIN_FLOAT32_VALUE are returned
      Parameters:
      value -
      Returns:

    • decode32

      public static double decode32(int milstd)
      Decodes a 32 bit MIL-STD 1750A number into a double.
      Parameters:
      milstd -
      Returns: