modp_dtoa() fails for input of 0.95 with precision of 1

[GoogleCodeExporter]

What steps will reproduce the problem?
1. call modp_dtoa(1.95, s, 1);
2. call modp_dtoa(0.95, s, 1);
3. call modp_dtoa(0.9999995, s, 6);

What is the expected output? What do you see instead?
1. s = "1.1"
2. s = "1.0"
3. s = "1.0"

What do you see instead?
1. s = "1.10"
2. s = "0.1"
3. s = "0.1"

What version of the product are you using? On what operating system?
Windows 7, TDM-GCC 4.8.1 64-bit with -std=C99 

Please provide any additional information below.
This causes issues for any values where the fractional part is recurring 9's 
followed by a 5 and the precision length would cut off the 5.

Original issue reported on code.google.com by [email protected] on 10 Dec 2014 at 12:55