diff --git a/exercises/094_c_math.zig b/exercises/094_c_math.zig index b8e65a3..3815cb0 100644 --- a/exercises/094_c_math.zig +++ b/exercises/094_c_math.zig @@ -1,19 +1,19 @@ // -// Often C functions are used where no equivalent Zig function exists -// yet. Since the integration of a C function is very simple as already +// Often, C functions are used where no equivalent Zig function exists +// yet. Since the integration of a C function is very simple, as already // seen in the last exercise, it naturally offers itself to use the -// very large variety of C functions for the own programs. -// In addition immediately an example: +// very large variety of C functions for our own programs. +// As an example: // // Let's say we have a given angle of 765.2 degrees. If we want to // normalize that, it means that we have to subtract X * 360 degrees // to get the correct angle. How could we do that? A good method is // to use the modulo function. But if we write "765.2 % 360", it won't // work, because the standard modulo function works only with integer -// values. In the C library "math" there is a function called "fmod". -// The "f" stands for floating and means that we can solve modulo for -// real numbers. With this function it should be possible to normalize -// our angel. Let's go. +// values. In the C library "math", there is a function called "fmod"; +// the "f" stands for floating and means that we can solve modulo for +// real numbers. With this function, it should be possible to normalize +// our angle. Let's go. const std = @import("std"); @@ -23,12 +23,12 @@ const c = @cImport({ }); pub fn main() !void { - const angel = 765.2; + const angle = 765.2; const circle = 360; - // Here we call the C function 'fmod' to get our normalized angel. - const result = c.fmod(angel, circle); + // Here we call the C function 'fmod' to get our normalized angle. + const result = c.fmod(angle, circle); // We use formatters for the desired precision and to truncate the decimal places - std.debug.print("The normalized angle of {d: >3.1} degrees is {d: >3.1} degrees.\n", .{ angel, result }); + std.debug.print("The normalized angle of {d: >3.1} degrees is {d: >3.1} degrees.\n", .{ angle, result }); }