nazri1

    time_ns = t[1].tv_nsec - t[0].tv_nsec + 1000000 * (t[1].tv_sec - t[0].tv_sec);
                                            ^^^^^^^ should be 1E9 instead

    $ seq -w 0001 0005|numfmt 
    1
    2
    3
    4
    5

    $ seq -w 0001 0005|sed 's/^0*//'
    1
    2
    3
    4
    5

    $ time ./tinykaboom
    ./tinykaboom  46.72s user 0.01s system 364% cpu 12.804 total

    $ time ./tinykaboom     
    ./tinykaboom  42.50s user 0.07s system 350% cpu 12.161 total

    $ time ./tinykaboom 
    ./tinykaboom  78.08s user 0.02s system 369% cpu 21.159 total

    $ go build ./tinykaboom.go
    $ time ./tinykaboom 
    ./tinykaboom  34.32s user 0.03s system 368% cpu 9.315 total

    Samples: 103K of event 'cycles:pp', Event count (approx.): 37252033995665
    Overhead  Command     Shared Object      Symbol
      32.17%  tinykaboom  tinykaboom         [.] math.sin
      28.80%  tinykaboom  tinykaboom         [.] main.hash
      11.81%  tinykaboom  tinykaboom         [.] main.rotate
       7.76%  tinykaboom  tinykaboom         [.] math.Min
       5.18%  tinykaboom  tinykaboom         [.] main.lerpFloat64
       4.25%  tinykaboom  tinykaboom         [.] main.noise
       2.59%  tinykaboom  tinykaboom         [.] runtime.mallocgc
       2.59%  tinykaboom  tinykaboom         [.] main.fractal_brownian_motion
       2.58%  tinykaboom  tinykaboom         [.] main.signed_distance

    Samples: 234K of event 'cycles:pp', Event count (approx.): 86721459552303
    Overhead  Command     Shared Object        Symbol
      67.93%  tinykaboom  libm-2.23.so         [.] __sin_avx
      30.80%  tinykaboom  tinykaboom           [.] _Z5noiseRK3vecILm3EfE
       1.27%  tinykaboom  libm-2.23.so         [.] __floorf_sse41
       0.00%  tinykaboom  tinykaboom           [.] _Z23fractal_brownian_motionRK3vecILm3EfE
       0.00%  tinykaboom  tinykaboom           [.] floorf@plt

    DEFUN ("atan", Fatan, Satan, 1, 2, 0,