13 lines
279 B
C
13 lines
279 B
C
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float factln(int n)
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{
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float gammln(float xx);
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void nrerror(char error_text[]);
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static float a[101];
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if (n < 0) nrerror("Negative factorial in routine factln");
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if (n <= 1) return 0.0;
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if (n <= 100) return a[n] ? a[n] : (a[n]=gammln(n+1.0));
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else return gammln(n+1.0);
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}
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