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authorAlan Coopersmith <alan.coopersmith@oracle.com>2013-07-18 20:50:17 -0700
committerAlan Coopersmith <alan.coopersmith@oracle.com>2013-07-18 20:51:55 -0700
commit52bbd1ce31f1adf2b7145b9d6183f6b866fa9301 (patch)
tree08a1fea4fc5655eaf3611c6df6f4e914bd8a8ab4
parent69de4eaa3be6cc177eb53a4754cb6bd35340c585 (diff)
Store sine & cosine tables as doubles instead of floats
Since they're used as doubles in the calculations, might as well store them that way instead of converting when read from the table at runtime. Costs about 4k more storage in the binary for the doubled tables. Also gets rid of 900 clang warnings, of the form: Clock.c:1708:11: warning: implicit conversion loses floating-point precision: 'double' to 'float' [-Wconversion] 0.000000, 0.001745, 0.003490, 0.005235, 0.006981, 0.008726, 0.010471, 0.012217, (one for each table entry) Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
-rw-r--r--Clock.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/Clock.c b/Clock.c
index ebbd2f6..8af0045 100644
--- a/Clock.c
+++ b/Clock.c
@@ -1704,7 +1704,7 @@ erase_hands(ClockWidget w, struct tm *tm)
}
}
-static float const Sines[] = {
+static double const Sines[] = {
0.000000, 0.001745, 0.003490, 0.005235, 0.006981, 0.008726, 0.010471, 0.012217,
0.013962, 0.015707, 0.017452, 0.019197, 0.020942, 0.022687, 0.024432, 0.026176,
0.027921, 0.029666, 0.031410, 0.033155, 0.034899, 0.036643, 0.038387, 0.040131,
@@ -1763,7 +1763,7 @@ static float const Sines[] = {
0.694658, 0.695912, 0.697165, 0.698415, 0.699663, 0.700909, 0.702153, 0.703394,
0.704634, 0.705871, 0.707106,
};
-static float const Cosines[] = {
+static double const Cosines[] = {
1.000000, 0.999998, 0.999993, 0.999986, 0.999975, 0.999961, 0.999945, 0.999925,
0.999902, 0.999876, 0.999847, 0.999815, 0.999780, 0.999742, 0.999701, 0.999657,
0.999610, 0.999559, 0.999506, 0.999450, 0.999390, 0.999328, 0.999262, 0.999194,