logGamma¶
Evaluates the logarithm of the absolute value of the gamma function log |Γ(x)|.
Synopsis¶
logGamma (x)
Required Arguments¶
- float
x(Input) - Point at which the logarithm of the absolute value of the gamma function is to be evaluated.
Return Value¶
The value of the logarithm of gamma function log |Γ(x)|.
Description¶
The logarithm of the absolute value of the gamma function log |Γ(x)| is computed.
Figure 15.4 — Plot of log|Γ(x)|
Example¶
In this example, log |Γ(3.5)| is computed and printed.
from __future__ import print_function
from pyimsl.stat.logGamma import logGamma
x = 3.5
ans = logGamma(x)
print("log gamma(%f) = %f\n" % (x, ans))
Output¶
log gamma(3.500000) = 1.200974
Warning Errors¶
IMSLS_NEAR_NEG_INT_WARN |
The result is accurate to less than
one-half precision because x is too
close to a negative integer. |
Fatal Errors¶
IMSLS_NEGATIVE_INTEGER |
The argument for the function cannot be a negative integer. |
IMSLS_NEAR_NEG_INT_FATAL |
The argument for the function is too close to a negative integer. |
IMSLS_LARGE_ABS_ARG_OVERFLOW |
|x| must not be so large
that the result overflows. |