Binary32

java.lang.Object

com.io7m.ieee754b16.Binary32

public final class Binary32 extends Object

Utility functions related to the binary32 format specified in IEEE 754 2008.

Method Summary

Modifier and Type

Method

Description

static int

unpackGetExponentUnbiased(float d)

Extract and unbias the exponent of the given packed float value.

static int

unpackGetSign(float d)

Retrieve the sign bit of the given floating point value, as an integer.

static int

unpackGetSignificand(float d)

Return the significand of the given floating point value as an integer.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details
- unpackGetExponentUnbiased
  
  public static int unpackGetExponentUnbiased(float d)
  Extract and unbias the exponent of the given packed float value.
  
  The exponent is encoded biased as a number in the range [0, 255], with 0 indicating that the number is subnormal and [1, 254] denoting the actual exponent plus BIAS. Infinite and NaN values always have a biased exponent of 255.
  
  This function will therefore return:
  
  0 - BIAS = -127 iff the input is a subnormal number.
  
  An integer in the range [1 - BIAS, 254 - BIAS] = [-126, 127] iff the input is a normal number.
  
  255 - BIAS = 128 iff the input is Float.POSITIVE_INFINITY, Float.NEGATIVE_INFINITY, or NaN.
  Parameters:
  
  d - A floating point value
  
  Returns:
  
  An unbiased exponent
- unpackGetSign
  
  public static int unpackGetSign(float d)
  
  Retrieve the sign bit of the given floating point value, as an integer.
  
  Parameters:
  
  d - A floating point value
  
  Returns:
  
  An unpacked sign bit
- unpackGetSignificand
  
  public static int unpackGetSignificand(float d)
  
  Return the significand of the given floating point value as an integer.
  Parameters:
  
  d - A floating point value
  
  Returns:
  
  An unpacked significand
  
  See Also:
  
  Binary16.packSetSignificandUnchecked(int)