fmt_fp.c: use constant that depends on `mrb_float` size.

afbc199e · Yukihiro "Matz" Matsumoto · 5ed3a347 · afbc199e
Unverified Commit afbc199e authored May 25, 2021 by Yukihiro "Matz" Matsumoto
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src/fmt_fp.c src/fmt_fp.c +2 -2

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--- a/src/fmt_fp.c
+++ b/src/fmt_fp.c
@@ -201,8 +201,8 @@ mrb_format_float(mrb_float f, char *buf, size_t buf_size, char fmt, int prec, ch
      e_sign = e_sign_char;
      dec = 0;

-      if (prec > (buf_remaining - 6)) {
-        prec = buf_remaining - 6;
+      if (prec > (buf_remaining - FLT_MIN_BUF_SIZE)) {
+        prec = buf_remaining - FLT_MIN_BUF_SIZE;
        if (fmt == 'g') {
          prec++;
        }