%left '-' '+'
%left '*' '/'
%right '^'
+%left '%'
%nonassoc UMINUS
%parse-param { long long *result }
%parse-param { double *dresult }
$$.dval = $1.ival * $2.ival;
$$.has_error = $1.has_error || $2.has_error;
}
+ | expression '%' expression {
+ if ($1.has_dval || $3.has_dval)
+ yyerror(0, 0, 0, 0, "modulo on floats");
+ if ($3.ival == 0)
+ yyerror(0, 0, 0, 0, "divide by zero");
+ else
+ $$.ival = $1.ival % $3.ival;
+ $$.has_error = $1.has_error || $3.has_error;
+ }
| expression '^' expression {
$$.has_error = $1.has_error || $3.has_error;
if (!$1.has_dval && !$3.has_dval) {
Anywhere a numeric value is required, an arithmetic expression may be used,
provided it is surrounded by parentheses.
Supported operators are
-addition, subtraction, multiplication, division and exponentiation.
+addition, subtraction, multiplication, division, modulus, and exponentiation.
For time values in expressions
units are microseconds by default. This is different than for time
values not in expressions (not enclosed in parentheses).