Package org.apache.commons.math3.util
Class FastMathLiteralArrays
- java.lang.Object
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- org.apache.commons.math3.util.FastMathLiteralArrays
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class FastMathLiteralArrays extends java.lang.Object
Utility class for loading tabulated data used byFastMath
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Field Summary
Fields Modifier and Type Field Description private static double[]
EXP_FRAC_A
Exponential over the range of 0 - 1 in increments of 2^-10 exp(x/1024) = expFracTableA[x] + expFracTableB[x].private static double[]
EXP_FRAC_B
Exponential over the range of 0 - 1 in increments of 2^-10 exp(x/1024) = expFracTableA[x] + expFracTableB[x].private static double[]
EXP_INT_A
Exponential evaluated at integer values, exp(x) = expIntTableA[x + EXP_INT_TABLE_MAX_INDEX] + expIntTableB[x+EXP_INT_TABLE_MAX_INDEX].private static double[]
EXP_INT_B
Exponential evaluated at integer values, exp(x) = expIntTableA[x + EXP_INT_TABLE_MAX_INDEX] + expIntTableB[x+EXP_INT_TABLE_MAX_INDEX]private static double[][]
LN_MANT
Extended precision logarithm table over the range 1 - 2 in increments of 2^-10.
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Constructor Summary
Constructors Modifier Constructor Description private
FastMathLiteralArrays()
Class contains only static methods.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description (package private) static double[]
loadExpFracA()
Load "EXP_FRAC_A".(package private) static double[]
loadExpFracB()
Load "EXP_FRAC_B".(package private) static double[]
loadExpIntA()
Load "EXP_INT_A".(package private) static double[]
loadExpIntB()
Load "EXP_INT_B".(package private) static double[][]
loadLnMant()
Load "LN_MANT".
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Field Detail
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EXP_INT_A
private static final double[] EXP_INT_A
Exponential evaluated at integer values, exp(x) = expIntTableA[x + EXP_INT_TABLE_MAX_INDEX] + expIntTableB[x+EXP_INT_TABLE_MAX_INDEX].
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EXP_INT_B
private static final double[] EXP_INT_B
Exponential evaluated at integer values, exp(x) = expIntTableA[x + EXP_INT_TABLE_MAX_INDEX] + expIntTableB[x+EXP_INT_TABLE_MAX_INDEX]
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EXP_FRAC_A
private static final double[] EXP_FRAC_A
Exponential over the range of 0 - 1 in increments of 2^-10 exp(x/1024) = expFracTableA[x] + expFracTableB[x]. 1024 = 2^10
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EXP_FRAC_B
private static final double[] EXP_FRAC_B
Exponential over the range of 0 - 1 in increments of 2^-10 exp(x/1024) = expFracTableA[x] + expFracTableB[x].
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LN_MANT
private static final double[][] LN_MANT
Extended precision logarithm table over the range 1 - 2 in increments of 2^-10.
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Method Detail
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loadExpIntA
static double[] loadExpIntA()
Load "EXP_INT_A".- Returns:
- a clone of the data array.
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loadExpIntB
static double[] loadExpIntB()
Load "EXP_INT_B".- Returns:
- a clone of the data array.
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loadExpFracA
static double[] loadExpFracA()
Load "EXP_FRAC_A".- Returns:
- a clone of the data array.
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loadExpFracB
static double[] loadExpFracB()
Load "EXP_FRAC_B".- Returns:
- a clone of the data array.
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loadLnMant
static double[][] loadLnMant()
Load "LN_MANT".- Returns:
- a clone of the data array.
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