# | Line 21 | Line 21 | static const char RCSid[] = "$Id$"; | |
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21 | * points east, and the Y-axis points north. | |
22 | */ | |
23 | ||
24 | + | #define _USE_MATH_DEFINES |
25 | + | |
26 | #include <stdio.h> | |
27 | #include <string.h> | |
28 | #include <math.h> |
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