Operator Reference

HALCON Operator Reference / Tuple / Arithmetic

• HDevelop
• .NET
• Python
• C++
• C

ClassesClasses | | Operators

tuple_lgammatuple_lgammaTupleLgammaTupleLgammatuple_lgamma (Operator)

tuple_lgammatuple_lgammaTupleLgammaTupleLgammatuple_lgamma — Compute the logarithm of the absolute value of the gamma function of a tuple.

Signature

tuple_lgamma( : : T : LogGamma)

Herror tuple_lgamma(double T, double* LogGamma)

Herror T_tuple_lgamma(const Htuple T, Htuple* LogGamma)

void TupleLgamma(const HTuple& T, HTuple* LogGamma)

HTuple HTuple::TupleLgamma() const

static void HOperatorSet.TupleLgamma(HTuple t, out HTuple logGamma)

HTuple HTuple.TupleLgamma()

def tuple_lgamma(t: MaybeSequence[Union[float, int]]) -> Sequence[float]

def tuple_lgamma_s(t: MaybeSequence[Union[float, int]]) -> float

Description

tuple_lgammatuple_lgammaTupleLgammaTupleLgammatuple_lgamma computes the logarithm of the absolute value of the gamma function of the input tuple TTTtt (for the definition of the gamma function, see tuple_tgammatuple_tgammaTupleTgammaTupleTgammatuple_tgamma). It is defined for every real number except for nonpositive integers. The logarithm of the absolute value of the gamma function is always returned as a floating point number in LogGammaLogGammaLogGammalogGammalog_gamma. The logarithm of the absolute value of the gamma function of a string is not allowed.

Exception: Empty input tuple

If the input tuple is empty, the operator returns an empty tuple.

HDevelop In-line Operation

HDevelop provides an in-line operation for tuple_lgammatuple_lgammaTupleLgammaTupleLgammatuple_lgamma, which can be used in an expression in the following syntax:

LogGamma := lgamma(T)

Execution Information

• Multithreading type: independent (runs in parallel even with exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Processed without parallelization.

Parameters

TTTtt (input_control)  number(-array) → HTupleMaybeSequence[Union[float, int]]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Input tuple.

LogGammaLogGammaLogGammalogGammalog_gamma (output_control)  number(-array) → HTupleSequence[float]HTupleHtuple (real) (double) (double) (double)

Logarithm of the absolute value of the gamma function of the input tuple.

Alternatives

tuple_tgammatuple_tgammaTupleTgammaTupleTgammatuple_tgamma

Module

Foundation

---

ClassesClasses | | Operators