# | Line 46 | Line 46 | extern double atan2a(double y, double x); | |
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46 | #define ttan(x) (tsin(x)/tcos(x)) | |
47 | #endif | |
48 | /* defined in xf.c */ | |
49 | + | extern int isxfopt(char *); |
50 | extern int xf(XF *ret, int ac, char *av[]); | |
51 | extern int invxf(XF *ret, int ac, char *av[]); | |
52 | extern int fullxf(FULLXF *fx, int ac, char *av[]); |
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