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gnucap:manual:commands:eval [2015/12/11 15:39] (current) |
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| + | ====== "eval" command ====== | ||
| + | |||
| + | ===== Purpose ===== | ||
| + | |||
| + | Check and evaluate an expression. | ||
| + | |||
| + | ===== Syntax ===== | ||
| + | |||
| + | eval expression | ||
| + | |||
| + | ===== Comments ===== | ||
| + | |||
| + | The eval command evaluates an expression and prints the result as a number. | ||
| + | |||
| + | ===== Examples ===== | ||
| + | |||
| + | gnucap> param a={b+c+7} | ||
| + | gnucap> eval a | ||
| + | parameter b+c+7 has no value | ||
| + | parameter b+c+7 has no value | ||
| + | a= NA | ||
| + | gnucap> param b=c+3 | ||
| + | gnucap> param c=4 | ||
| + | gnucap> eval a | ||
| + | a= 18. | ||
| + | gnucap> eval b+c | ||
| + | (b + c)= 11. | ||
| + | gnucap> | ||