# | Line 78 | Line 78 | extern char errmsg[]; /* global buffer for error me | |
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78 | #define tsin sin | |
79 | #define ttan tan | |
80 | #else | |
81 | < | extern double tcos(); /* table-based cosine approximation */ |
81 | > | /* table-based cosine approximation */ |
82 | #define tsin(x) tcos((x)-(PI/2.)) | |
83 | #define ttan(x) (tsin(x)/tcos(x)) | |
84 | #endif | |
# | Line 103 | Line 103 | extern double tcos(); /* table-based cosine approxim | |
103 | #define index strchr | |
104 | #define rindex strrchr | |
105 | #endif | |
106 | < | extern off_t lseek(); |
106 | > | |
107 | > | /* <unistd.h> is missing on some systems */ |
108 | > | extern off_t lseek(int, off_t, int); |
109 | ||
110 | #ifdef _WIN32 | |
111 | #define NIX 1 |
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