[PATCH 2/2] Fix gcvt to always show 'ndigits' of precision

Leading zeros after the decimal point should not count
towards the 'ndigits' limit.

This makes gcvt match glibc and the posix gcvt man page.

Signed-off-by: Keith Packard <[email protected]>
---
 newlib/libc/stdlib/ecvtbuf.c | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/newlib/libc/stdlib/ecvtbuf.c b/newlib/libc/stdlib/ecvtbuf.c
index 12e8c9a92..228362e07 100644
--- a/newlib/libc/stdlib/ecvtbuf.c
+++ b/newlib/libc/stdlib/ecvtbuf.c
@@ -349,15 +349,10 @@ _gcvt (struct _reent *ptr,
       char *end;
       char *p;
 
-      if (invalue < 1.0)
-	{
-	  /* what we want is ndigits after the point */
-	  p = _dtoa_r (ptr, invalue, 3, ndigit, &decpt, &sign, &end);
-	}
-      else
-	{
-	  p = _dtoa_r (ptr, invalue, 2, ndigit, &decpt, &sign, &end);
-	}
+      /* We always want ndigits of precision, even if that means printing
+       * a bunch of leading zeros for numbers < 1.0
+       */
+      p = _dtoa_r (ptr, invalue, 2, ndigit, &decpt, &sign, &end);
 
       if (decpt == 9999)
 	{
@@ -383,11 +378,12 @@ _gcvt (struct _reent *ptr,
 	  if (buf == save)
 	    *buf++ = '0';
 	  *buf++ = '.';
-	  while (decpt < 0 && ndigit > 0)
+
+	  /* Leading zeros don't count towards 'ndigit' */
+	  while (decpt < 0)
 	    {
 	      *buf++ = '0';
 	      decpt++;
-	      ndigit--;
 	    }
 
 	  /* Print rest of stuff */
-- 
2.24.0