/usr/include/libspreadsheet-1.12/spreadsheet/sf-trig.h is in gnumeric 1.12.32-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | #ifndef GNM_SF_TRIG_H_
#define GNM_SF_TRIG_H_
#include <numbers.h>
gnm_float gnm_cot (gnm_float x);
gnm_float gnm_acot (gnm_float x);
gnm_float gnm_coth (gnm_float x);
gnm_float gnm_acoth (gnm_float x);
#ifdef GNM_REDUCES_TRIG_RANGE
/* gnm_sin, gnm_cos, gnm_tan prototyped in numbers.h */
#endif
#endif
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