diff options
Diffstat (limited to 'src/pj_tsfn.c')
| -rw-r--r-- | src/pj_tsfn.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/pj_tsfn.c b/src/pj_tsfn.c index d9dc0bc4..448aae99 100644 --- a/src/pj_tsfn.c +++ b/src/pj_tsfn.c @@ -1,10 +1,10 @@ /* determine small t */ #include <math.h> #include <projects.h> -#define HALFPI 1.5707963267948966 + double pj_tsfn(double phi, double sinphi, double e) { sinphi *= e; - return (tan (.5 * (HALFPI - phi)) / + return (tan (.5 * (M_HALFPI - phi)) / pow((1. - sinphi) / (1. + sinphi), .5 * e)); } |