fortran66 https://blog.hatena.ne.jp/fortran66/ fortran66のブログ https://fortran66.hatenablog.com/ PROGRAM test IMPLICIT NONE INTEGER :: i REAL :: x, s, c, t c = 0.0 s = 0.0 DO i = 1, 100 x = 0.01 - c t = s + x c = (t - s) - x s = t PRINT *, s, c END DO PRINT *, s == 1.0, s STOP END PROGRAM test 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Ffortran66.hatenablog.com%2Fentry%2F20100902%2F1283358377" title="四手和　Kahan 和 - fortran66のブログ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2010-09-02 01:26:17 rich https://fortran66.hatenablog.com/entry/20100902/1283358377 1.0 100%