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Convert cosd() function into a macro.

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Dianne Skoll
2024-03-19 16:26:07 -04:00
parent 97b53d5e40
commit 95523c8f10
1 changed files with 2 additions and 5 deletions
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7
src/funcs.c
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@@ -3684,11 +3684,8 @@ mean_december_solstice(double y)
}
/* Cosine of an angle specified in degrees */
static double
cosd(double degrees)
{
return cos((degrees / 180.0) * 3.14159265358979);
}
#define PI_BY_180 0.01745329251994329576923690768
#define cosd(theta) cos( (theta) * PI_BY_180)
/* Astronomical Algorithms by Meeus, p. 179
These weird periodic components refine the mean solstice/equinox dates