| # | Line 54 | Line 54 | tcos(double x) /* approximate cosine */ | |
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| 54 | ||
| 55 | /* Fast arctangent approximation due to Rajan et al. 2006 */ | |
| 56 | double | |
| 57 | < | aatan2(double y, double x) |
| 57 | > | atan2a(double y, double x) |
| 58 | { | |
| 59 | double ratio, aratio, val; | |
| 60 | ||
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