Hello everyone! I noticed, when we parse and validate values (in particular, the int type), we use the *rint* method, but unfortunately it does not work according to the round rules. Although on the website https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/rint-rintf-rintl?view=msvc-170 says something else.
I tested at several OS: Lubuntu daria-shanina@lnv-dshanina:~/projects/test$ ./rounding_up rint(2.00) is 2.0 | round(2.00) is 2.0 | ceil(2.00) is 2.0 | floor(2.00) is 2.0 rint(2.10) is 2.0 | round(2.10) is 2.0 | ceil(2.10) is 3.0 | floor(2.10) is 2.0 rint(2.20) is 2.0 | round(2.20) is 2.0 | ceil(2.20) is 3.0 | floor(2.20) is 2.0 rint(2.30) is 2.0 | round(2.30) is 2.0 | ceil(2.30) is 3.0 | floor(2.30) is 2.0 rint(2.40) is 2.0 | round(2.40) is 2.0 | ceil(2.40) is 3.0 | floor(2.40) is 2.0 rint(2.50) is 2.0 | round(2.50) is 3.0 | ceil(2.50) is 3.0 | floor(2.50) is 2.0 rint(2.60) is 3.0 | round(2.60) is 3.0 | ceil(2.60) is 3.0 | floor(2.60) is 2.0 rint(2.70) is 3.0 | round(2.70) is 3.0 | ceil(2.70) is 3.0 | floor(2.70) is 2.0 rint(2.80) is 3.0 | round(2.80) is 3.0 | ceil(2.80) is 3.0 | floor(2.80) is 2.0 rint(2.90) is 3.0 | round(2.90) is 3.0 | ceil(2.90) is 3.0 | floor(2.90) is 2.0 FreeBSD daria@2ndfreebsd:~/projects/test$ ./rounding_up rint(2.00) is 2.0 | round(2.00) is 2.0 | ceil(2.00) is 2.0 | floor(2.00) is 2.0 rint(2.10) is 2.0 | round(2.10) is 2.0 | ceil(2.10) is 3.0 | floor(2.10) is 2.0 rint(2.20) is 2.0 | round(2.20) is 2.0 | ceil(2.20) is 3.0 | floor(2.20) is 2.0 rint(2.30) is 2.0 | round(2.30) is 2.0 | ceil(2.30) is 3.0 | floor(2.30) is 2.0 rint(2.40) is 2.0 | round(2.40) is 2.0 | ceil(2.40) is 3.0 | floor(2.40) is 2.0 rint(2.50) is 2.0 | round(2.50) is 3.0 | ceil(2.50) is 3.0 | floor(2.50) is 2.0 rint(2.60) is 3.0 | round(2.60) is 3.0 | ceil(2.60) is 3.0 | floor(2.60) is 2.0 rint(2.70) is 3.0 | round(2.70) is 3.0 | ceil(2.70) is 3.0 | floor(2.70) is 2.0 rint(2.80) is 3.0 | round(2.80) is 3.0 | ceil(2.80) is 3.0 | floor(2.80) is 2.0 rint(2.90) is 3.0 | round(2.90) is 3.0 | ceil(2.90) is 3.0 | floor(2.90) is 2.0 Windows C:\Users\Daria\projects\test>rounding_up.exe rint(2.00) is 2.0 | round(2.00) is 2.0 | ceil(2.00) is 2.0 | floor(2.00) is 2.0 rint(2.10) is 2.0 | round(2.10) is 2.0 | ceil(2.10) is 3.0 | floor(2.10) is 2.0 rint(2.20) is 2.0 | round(2.20) is 2.0 | ceil(2.20) is 3.0 | floor(2.20) is 2.0 rint(2.30) is 2.0 | round(2.30) is 2.0 | ceil(2.30) is 3.0 | floor(2.30) is 2.0 rint(2.40) is 2.0 | round(2.40) is 2.0 | ceil(2.40) is 3.0 | floor(2.40) is 2.0 rint(2.50) is 2.0 | round(2.50) is 3.0 | ceil(2.50) is 3.0 | floor(2.50) is 2.0 rint(2.60) is 3.0 | round(2.60) is 3.0 | ceil(2.60) is 3.0 | floor(2.60) is 2.0 rint(2.70) is 3.0 | round(2.70) is 3.0 | ceil(2.70) is 3.0 | floor(2.70) is 2.0 rint(2.80) is 3.0 | round(2.80) is 3.0 | ceil(2.80) is 3.0 | floor(2.80) is 2.0 rint(2.90) is 3.0 | round(2.90) is 3.0 | ceil(2.90) is 3.0 | floor(2.90) is 2.0 As you could see in the output, the *round* method works according to the rules. Maybe we should use it? Thank you for your attention! -- Best regards, Daria Shanina
