JRuby Base 10.0.0.0 · org.jruby.RubyMath · APIdia, the JavaDoc alternative

Modifier and Type	Class and Description
public static class	RubyMath.NemesLogGamma Inner class to help with Γ functions

Modifier and Type	Field and Description
public static final double[]	ASINH_COEF
public static final double[]	ATANH_COEF
private static int	DBL_MANT_DIG
private static int	DBL_MAX_EXP
public static final double[]	ERFC2_COEF
public static final double[]	ERFC_COEF
public static final double[]	ERFCC_COEF
private static final double[]	FACTORIAL
private static double	LOG_10_2
private static double	LOG_E_2
private static final double[]	NEMES_GAMMA_COEFF

Access	Constructor and Description
public	RubyMath()

Method Summary

Modifier and Type	Method and Description
public static RubyFloat	acos(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	acosh(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	asin(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	asinh(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	atan(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	atan2(ThreadContext context, IRubyObject recv, IRubyObject x, IRubyObject y)
public static RubyFloat	atanh(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	cbrt(ThreadContext context, IRubyObject recv, IRubyObject x)
public static double	chebylevSerie(double x, double[] coef)
public static RubyFloat	cos(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	cosh(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyModule	createMathModule(ThreadContext context) Create the Math module and add it to the Ruby runtime.
private static void	domainCheck(ThreadContext context, double value, String msg)
public static RubyFloat	erf(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	erfc(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	exp(ThreadContext context, IRubyObject recv, IRubyObject exponent)
public static RubyFloat	exp(ThreadContext context, IRubyObject exponent)
public static RubyArray<T extends IRubyObject>	frexp(ThreadContext context, IRubyObject recv, IRubyObject other)
public static RubyFloat	Returns: Γ(x) for real number x gamma(ThreadContext context, IRubyObject Math module recv, IRubyObject a real number x) Based on Gergő Nemes's Gamma Function approximation formula, we compute approximate value of Gamma function of x.
private static double[]	get_double_rshift(ThreadContext context, IRubyObject x)
public static RubyFloat	hypot(ThreadContext context, IRubyObject recv, IRubyObject x, IRubyObject y)
public static RubyFloat	hypot19(ThreadContext context, IRubyObject recv, IRubyObject x, IRubyObject y) Deprecated
public static RubyFloat	ldexp(ThreadContext context, IRubyObject recv, IRubyObject mantissa, IRubyObject exponent)
public static RubyArray<T extends IRubyObject>	Returns: 2-element array [ln(Γ(x)), sgn] for real number x, where sgn is the sign of Γ(x) when exponentiated lgamma(ThreadContext context, IRubyObject Math module recv, IRubyObject a real number x) Based on Gergő Nemes's Gamma Function approximation formula, we compute Log Gamma function for real number x.
public static RubyFloat	log(ThreadContext context, IRubyObject recv, IRubyObject val) Returns the natural logarithm of x.
public static RubyFloat	log(ThreadContext context, IRubyObject val)
public static RubyFloat	log(ThreadContext context, IRubyObject recv, IRubyObject val, IRubyObject base)
public static RubyFloat	log(ThreadContext context, IRubyObject recv, IRubyObject... args)
public static RubyFloat	log10(ThreadContext context, IRubyObject recv, IRubyObject x) Returns the base 10 logarithm of x.
public static RubyFloat	log2(ThreadContext context, IRubyObject recv, IRubyObject x) Returns the base 2 logarithm of x.
public static double	nemes_gamma(double x)
public static double	sign(double x, double y)
public static RubyFloat	sin(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	sinh(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	sqrt(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	tan(ThreadContext context, IRubyObject recv, IRubyObject x)
public static RubyFloat	tanh(ThreadContext context, IRubyObject recv, IRubyObject x)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

ASINH_COEF	back to summary
public static final double[] ASINH_COEF

ATANH_COEF	back to summary
public static final double[] ATANH_COEF

DBL_MANT_DIG	back to summary
private static int DBL_MANT_DIG

DBL_MAX_EXP	back to summary
private static int DBL_MAX_EXP

ERFC2_COEF	back to summary
public static final double[] ERFC2_COEF

ERFC_COEF	back to summary
public static final double[] ERFC_COEF

ERFCC_COEF	back to summary
public static final double[] ERFCC_COEF

FACTORIAL	back to summary
private static final double[] FACTORIAL

LOG_10_2	back to summary
private static double LOG_10_2

LOG_E_2	back to summary
private static double LOG_E_2

NEMES_GAMMA_COEFF	back to summary
private static final double[] NEMES_GAMMA_COEFF

RubyMath	back to summary
public RubyMath()

Method Detail

acos	back to summary
public static RubyFloat acos(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:acos module:true visibility:PRIVATE

acosh	back to summary
public static RubyFloat acosh(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:acosh module:true visibility:PRIVATE

asin	back to summary
public static RubyFloat asin(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:asin module:true visibility:PRIVATE

asinh	back to summary
public static RubyFloat asinh(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:asinh module:true visibility:PRIVATE

atan	back to summary
public static RubyFloat atan(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:atan module:true visibility:PRIVATE

atan2	back to summary
public static RubyFloat atan2(ThreadContext context, IRubyObject recv, IRubyObject x, IRubyObject y) Annotations @JRubyMethod name:atan2 module:true visibility:PRIVATE

atanh	back to summary
public static RubyFloat atanh(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:atanh module:true visibility:PRIVATE

cbrt	back to summary
public static RubyFloat cbrt(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:cbrt module:true visibility:PRIVATE

chebylevSerie	back to summary
public static double chebylevSerie(double x, double[] coef)

cos	back to summary
public static RubyFloat cos(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:cos module:true visibility:PRIVATE

cosh	back to summary
public static RubyFloat cosh(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:cosh module:true visibility:PRIVATE

createMathModule	back to summary
public static RubyModule createMathModule(ThreadContext context) Create the Math module and add it to the Ruby runtime.

domainCheck	back to summary
private static void domainCheck(ThreadContext context, double value, String msg)

erf	back to summary
public static RubyFloat erf(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:erf module:true visibility:PRIVATE

erfc	back to summary
public static RubyFloat erfc(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:erfc module:true visibility:PRIVATE

exp	back to summary
public static RubyFloat exp(ThreadContext context, IRubyObject recv, IRubyObject exponent) Annotations @JRubyMethod name:exp module:true visibility:PRIVATE

exp	back to summary
public static RubyFloat exp(ThreadContext context, IRubyObject exponent)

frexp	back to summary
public static RubyArray<T extends IRubyObject> frexp(ThreadContext context, IRubyObject recv, IRubyObject other) Annotations @JRubyMethod name:frexp module:true visibility:PRIVATE

gamma	back to summary
public static RubyFloat gamma(ThreadContext context, IRubyObject recv, IRubyObject x) Based on Gergő Nemes's Gamma Function approximation formula, we compute approximate value of Gamma function of x. Parameters recv:IRubyObject Math module x:IRubyObject a real number Returns:RubyFloat Γ(x) for real number x Annotations @JRubyMethod name:gamma module:true visibility:PRIVATE See Also New asymptotic expansion for the Γ(x) function

gamma

back to summary

public static RubyFloat gamma(ThreadContext context, IRubyObject recv, IRubyObject x)

Based on Gergő Nemes's Gamma Function approximation formula, we compute approximate value of Gamma function of x.

Parameters

recv:IRubyObject: Math module
x:IRubyObject: a real number

Returns:RubyFloat

Γ(x) for real number x

Annotations

@JRubyMethod
name:gamma
module:true
visibility:PRIVATE

get_double_rshift	back to summary
private static double[] get_double_rshift(ThreadContext context, IRubyObject x)

hypot	back to summary
public static RubyFloat hypot(ThreadContext context, IRubyObject recv, IRubyObject x, IRubyObject y) Annotations @JRubyMethod name:hypot module:true visibility:PRIVATE

hypot19	back to summary
public static RubyFloat hypot19(ThreadContext context, IRubyObject recv, IRubyObject x, IRubyObject y) Deprecated Annotations @Deprecated

ldexp	back to summary
public static RubyFloat ldexp(ThreadContext context, IRubyObject recv, IRubyObject mantissa, IRubyObject exponent) Annotations @JRubyMethod name:ldexp module:true visibility:PRIVATE

lgamma back to summary

lgamma	back to summary
public static RubyArray<T extends IRubyObject> lgamma(ThreadContext context, IRubyObject recv, IRubyObject x) Based on Gergő Nemes's Gamma Function approximation formula, we compute Log Gamma function for real number x. Parameters recv:IRubyObject Math module x:IRubyObject a real number Returns:RubyArray<T extends IRubyObject> 2-element array [ln(Γ(x)), sgn] for real number x, where sgn is the sign of Γ(x) when exponentiated Annotations @JRubyMethod name:lgamma module:true visibility:PRIVATE See Also `gamma(ThreadContext, org.jruby.runtime.builtin.IRubyObject, org.jruby.runtime.builtin.IRubyObject)`

public static RubyArray<T extends IRubyObject> lgamma(ThreadContext context, IRubyObject recv, IRubyObject x)

Based on Gergő Nemes's Gamma Function approximation formula, we compute Log Gamma function for real number x.

Parameters

recv:IRubyObject: Math module
x:IRubyObject: a real number

Returns:RubyArray<T extends IRubyObject>

2-element array [ln(Γ(x)), sgn] for real number x, where sgn is the sign of Γ(x) when exponentiated

Annotations

@JRubyMethod
name:lgamma
module:true
visibility:PRIVATE

log	back to summary
public static RubyFloat log(ThreadContext context, IRubyObject recv, IRubyObject val) Returns the natural logarithm of x. Annotations @JRubyMethod name:log module:true visibility:PRIVATE

log

back to summary

public static RubyFloat log(ThreadContext context, IRubyObject recv, IRubyObject val)

Returns the natural logarithm of x.

Annotations

@JRubyMethod
name:log
module:true
visibility:PRIVATE

log	back to summary
public static RubyFloat log(ThreadContext context, IRubyObject val)

log	back to summary
public static RubyFloat log(ThreadContext context, IRubyObject recv, IRubyObject val, IRubyObject base) Annotations @JRubyMethod name:log module:true visibility:PRIVATE

log	back to summary
public static RubyFloat log(ThreadContext context, IRubyObject recv, IRubyObject... args)

log10	back to summary
public static RubyFloat log10(ThreadContext context, IRubyObject recv, IRubyObject x) Returns the base 10 logarithm of x. Annotations @JRubyMethod name:log10 module:true visibility:PRIVATE

log10

back to summary

public static RubyFloat log10(ThreadContext context, IRubyObject recv, IRubyObject x)

Returns the base 10 logarithm of x.

Annotations

@JRubyMethod
name:log10
module:true
visibility:PRIVATE

log2	back to summary
public static RubyFloat log2(ThreadContext context, IRubyObject recv, IRubyObject x) Returns the base 2 logarithm of x. Annotations @JRubyMethod name:log2 module:true visibility:PRIVATE

log2

back to summary

public static RubyFloat log2(ThreadContext context, IRubyObject recv, IRubyObject x)

Returns the base 2 logarithm of x.

Annotations

@JRubyMethod
name:log2
module:true
visibility:PRIVATE

nemes_gamma	back to summary
public static double nemes_gamma(double x)

sign	back to summary
public static double sign(double x, double y)

sin	back to summary
public static RubyFloat sin(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:sin module:true visibility:PRIVATE

sinh	back to summary
public static RubyFloat sinh(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:sinh module:true visibility:PRIVATE

sqrt	back to summary
public static RubyFloat sqrt(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:sqrt module:true visibility:PRIVATE

tan	back to summary
public static RubyFloat tan(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:tan module:true visibility:PRIVATE

tanh	back to summary
public static RubyFloat tanh(ThreadContext context, IRubyObject recv, IRubyObject x) Annotations @JRubyMethod name:tanh module:true visibility:PRIVATE

public Class RubyMath

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

public Class RubyMath.NemesLogGamma

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

Modifier and Type	Method and Description
private static boolean	negZero(final double x)
private static int	signum(final double x, final double int_part)