Results for &#x201C;arithmetic&#x201D;

Format a numeric label with leading zeroes

Bash Scripts: Use a constant printf format string and supply values as separate arguments.

Increment a counter without an unexpected errexit

Bash Scripts: An assignment avoids the zero-result exit status of a standalone arithmetic post-increment.

Parse an unsigned hexadecimal integer

C: Use an explicit base and check both range and full consumption.

Parse digits with leading zeroes as decimal

Bash Scripts: The 10# prefix avoids Bash treating a leading zero as an octal notation.

Print text containing percent characters literally

Bash Scripts: Never use untrusted text as the printf format string.

Read fields captured by a Bash regular expression

Bash Scripts: BASH_REMATCH contains the full match followed by capture groups after a successful regex test.

Reject NaN and infinite values

C: isfinite detects whether a floating-point value is an ordinary finite number.

Remove a trailing carriage return from a line

Bash Scripts: Use an ANSI-C quoted carriage return as the suffix pattern.

Round a halfway floating-point value

C: The C round function rounds halfway cases away from zero.

Round downward and upward independently

C: floor and ceil round toward negative and positive infinity respectively.

Set and clear a bit in a shell integer

Bash Scripts: Use shifts and bitwise operators for a small flag field.

Split a record while retaining its remainder

Bash Scripts: The final read variable receives the remainder of a delimited record.