The lgamma() function in Ruby returns two numbers, one represents the logarithmic gamma of value while the other signifies the sign of gamma of value.
Syntax: Math.lgamma(value)
Parameter: The function takes one mandatory parameter value whose logarithmic gamma is returned and its sign.
Return Value: The function returns two numbers, where one represents the logarithmic gamma of value while the other signifies the sign of gamma of value.
Example 1:
# Ruby program for lgamma() function # Assigning values val1 = 132 val2 = 0 val3 = -23 val4 = 1 # Prints the value returned by lgamma() puts Math.lgamma(val1)
puts puts Math.lgamma(val2)
puts puts Math.lgamma(val3)
puts puts Math.lgamma(val4)
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Output:
511.00802266523596 1 Infinity 1 Infinity 1 0.0 1
Example 2:
# Ruby program for lgamma() function # Assigning values val1 = -1 val2 = 2 val3 = -2 val4 = -9 # Prints the value returned by lgamma() puts Math.lgamma(val1)
puts puts Math.lgamma(val2)
puts puts Math.lgamma(val3)
puts puts Math.lgamma(val4)
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Output:
Infinity 1 0.0 1 Infinity 1 Infinity 1
Reference: https://devdocs.io/ruby~2.5/math#method-c-lgamma