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java.lang.Objectorg.apache.commons.math.dfp.DfpMath
public class DfpMath
Mathematical routines for use with Dfp
.
The constants are defined in DfpField
Method Summary | |
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static Dfp |
acos(Dfp a)
computes the arc-cosine of the argument. |
static Dfp |
asin(Dfp a)
computes the arc-sine of the argument. |
static Dfp |
atan(Dfp a)
computes the arc tangent of the argument Uses the typical taylor series but may reduce arguments using the following identity tan(x+y) = (tan(x) + tan(y)) / (1 - tan(x)*tan(y)) since tan(PI/8) = sqrt(2)-1, atan(x) = atan( (x - sqrt(2) + 1) / (1+x*sqrt(2) - x) + PI/8.0 |
static Dfp |
cos(Dfp a)
computes the cosine of the argument. |
static Dfp |
exp(Dfp a)
Computes e to the given power. |
static Dfp |
log(Dfp a)
Returns the natural logarithm of a. |
static Dfp |
pow(Dfp x,
Dfp y)
Computes x to the y power. |
static Dfp |
pow(Dfp base,
int a)
Raises base to the power a by successive squaring. |
static Dfp |
sin(Dfp a)
computes the sine of the argument. |
static Dfp |
tan(Dfp a)
computes the tangent of the argument. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static Dfp pow(Dfp base, int a)
base
- number to raisea
- power
public static Dfp exp(Dfp a)
a
- power at which e should be raised
public static Dfp log(Dfp a)
a
- number from which logarithm is requested
public static Dfp pow(Dfp x, Dfp y)
Uses the following method:
Special Cases
x
- base to be raisedy
- power to which base should be raised
public static Dfp sin(Dfp a)
a
- number from which sine is desired
public static Dfp cos(Dfp a)
a
- number from which cosine is desired
public static Dfp tan(Dfp a)
a
- number from which tangent is desired
public static Dfp atan(Dfp a)
a
- number from which arc-tangent is desired
public static Dfp asin(Dfp a)
a
- number from which arc-sine is desired
public static Dfp acos(Dfp a)
a
- number from which arc-cosine is desired
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