C/math.h/lgamma
lgamma: computes the absolute value of the gamma and returns its natural logarithm
<source lang="cpp">
//Declaration: float lgammaf(float arg);
double lgamma(double arg); long double lgammal(long double arg); #include <math.h> #include <stdio.h> int main(void) { printf("%f", lgammaf (1.2)); return 0; } /*
-0.085374*/
</source>