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- /* Listing 3 Cosine Table Generation */
-
-
- #include <math.h>
- #include <stdio.h>
- #include <stdlib.h>
-
- /*
- This is the routine used to generate the table used in the
- fixed point sine and cosine functions.
- */
-
-
- #define PI 3.14159265358979323846
- #define DEGREES_IN_CIRCLE (1L << 12)
- #define TABLE_UNITY (1L << 14)
-
-
-
- int main( void )
- {
- double degree, step;
- unsigned short value;
- int column;
-
- step = (2.0 * PI) / DEGREES_IN_CIRCLE;
-
- for( degree = 0.0, column = 0; degree < PI / 2.0; degree += step )
- {
- value = (unsigned short)(TABLE_UNITY * cos( degree ));
- printf( "0x%04hx,%c", value, ++column % 8 ? ' ' : '\n' );
- }
-
- return( 0 );
- }
-
-