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| author | Michael R Sweet <michael.r.sweet@gmail.com> | 2005-08-08 15:01:45 +0000 |
|---|---|---|
| committer | Michael R Sweet <michael.r.sweet@gmail.com> | 2005-08-08 15:01:45 +0000 |
| commit | ff88ea3ec5c5c1162d96c95a22cf44d3f6194e52 (patch) | |
| tree | c01b1731d06e72692d30ed708c453dad5e83ce7a /src/Fl_Valuator.cxx | |
| parent | a4f428d82b63a93095bcd1338875c5ba4be8d5b5 (diff) | |
Fl_Valuator-derived widgets could show more digits than were
necessary (STR #971)
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@4487 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Diffstat (limited to 'src/Fl_Valuator.cxx')
| -rw-r--r-- | src/Fl_Valuator.cxx | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/src/Fl_Valuator.cxx b/src/Fl_Valuator.cxx index 06965f202..b6065a4c8 100644 --- a/src/Fl_Valuator.cxx +++ b/src/Fl_Valuator.cxx @@ -121,13 +121,19 @@ int Fl_Valuator::format(char* buffer) { double v = value(); // MRS: THIS IS A HACK - RECOMMEND ADDING BUFFER SIZE ARGUMENT if (!A || !B) return snprintf(buffer, 128, "%g", v); + + // Figure out how many digits are required to correctly format the + // value. int i; - double ab = A/B; - for (i=0; i<8; i++) { - if ((ab-floor(ab))<1e-9) break; - ab *= 10.0; - } - return sprintf(buffer, "%.*f", i, v); + char temp[255], *ptr; + snprintf(temp, sizeof(temp), "%g", A/B); + if ((ptr = strchr(temp, '.')) != NULL) + i = strlen(ptr + 1); + else + i = 0; + + // MRS: THIS IS A HACK - RECOMMEND ADDING BUFFER SIZE ARGUMENT + return snprintf(buffer, 128, "%.*f", i, v); } // |