/usr/include/libspreadsheet-1.12/spreadsheet/sf-gamma.h is in gnumeric 1.12.28-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | #ifndef GNM_SF_GAMMA_H_
#define GNM_SF_GAMMA_H_
#include <numbers.h>
#include <complex.h>
gnm_float lgamma1p (gnm_float a);
gnm_float stirlerr(gnm_float n);
gnm_float gnm_gamma (gnm_float x);
gnm_float gnm_gammax (gnm_float x, int *exp2);
gnm_float gnm_fact (gnm_float x);
gnm_float gnm_factx (gnm_float x, int *exp2);
int qfactf (gnm_float x, GnmQuad *mant, int *exp2);
gnm_complex gnm_complex_gamma (gnm_complex z, int *exp2);
gnm_complex gnm_complex_fact (gnm_complex z, int *exp2);
gnm_complex gnm_complex_igamma (gnm_complex a, gnm_complex z,
gboolean lower, gboolean regularized);
gnm_float gnm_lbeta (gnm_float a, gnm_float b);
gnm_float gnm_beta (gnm_float a, gnm_float b);
gnm_float gnm_lbeta3 (gnm_float a, gnm_float b, int *sign);
gnm_float pochhammer (gnm_float x, gnm_float n);
gnm_float combin (gnm_float n, gnm_float k);
gnm_float permut (gnm_float n, gnm_float k);
#endif
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