5.2.15  Transforming a string into a number

The expr command transforms a string representing a valid Xcas statement into the actual statement.

• expr takes str, a string corresponding to an Xcas statement.
• expr(str) evaluates the statement.

Examples

In particular, expr can transform a string representing a number into the number (see Section 3.1.1).

since 0123 represents a base 8 integer (see Section 5.4.1) and 1· 8²+2· 8+3=83.

since 0x12f represents a base 16 number and 1· 16²+2· 16+15=303.