Files
2025-02-Numerical/lib/nr/k_and_r/recipes/gammq.c
2025-09-12 18:55:25 +09:00

18 lines
292 B
C

float gammq(a,x)
float a,x;
{
void gcf(),gser();
void nrerror();
float gamser,gammcf,gln;
if (x < 0.0 || a <= 0.0) nrerror("Invalid arguments in routine gammq");
if (x < (a+1.0)) {
gser(&gamser,a,x,&gln);
return 1.0-gamser;
} else {
gcf(&gammcf,a,x,&gln);
return gammcf;
}
}