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NAG[s18ehc] NAG[nag_bessel_k_alpha_scaled] - Scaled modified Bessel functions ](/support/helpjp/helpview.aspx?si=9769/file08677/math6.png) for real  , selected values of  and 
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Calling Sequence
s18ehc(x, ia, ja, nl, b, 'fail'=fail)
nag_bessel_k_alpha_scaled(. . .)
Parameters
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x - float;
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On entry: the argument  of the function.
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Constraint:  . .
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ia - integer;
ja - integer;
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nl - integer;
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On entry: the value of  . Note that the order of the last member in the required sequence of function values is given by  .
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Constraint:  . .
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b - Vector(1.. , datatype=float[8]);
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'fail'=fail - table; (optional)
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The NAG error argument, see the documentation for NagError.
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Description
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Error Indicators and Warnings
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"NE_INT"
On entry,  . Constraint:  .
"NE_INT_2"
On entry,  ,  . Constraint: ia and ja must constitute a valid pair (ia,ja).
"NE_INTERNAL_ERROR"
An internal error has occurred in this function. Check the function call and any array sizes. If the call is correct then please consult NAG for assistance.
"NE_OVERFLOW_LIKELY"
The evaluation has been abandoned due to the likelihood of overflow.
"NE_REAL"
On entry,  . Constraint:  .
"NE_TERMINATION_FAILURE"
The evaluation has been abandoned due to failure to satisfy the termination condition.
"NE_TOTAL_PRECISION_LOSS"
The evaluation has been abandoned due to total loss of precision.
"NW_SOME_PRECISION_LOSS"
The evaluation has been completed but some precision has been lost.
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Examples
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x := 0.5:
ia := 0:
ja := 1:
nl := 3:
b := Vector(4, datatype=float[8]):
NAG:-s18ehc(x, ia, ja, nl, b):
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