diff options
Diffstat (limited to 'usr.bin/m4/parser.y')
| -rw-r--r-- | usr.bin/m4/parser.y | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/usr.bin/m4/parser.y b/usr.bin/m4/parser.y index fac6709..deda962 100644 --- a/usr.bin/m4/parser.y +++ b/usr.bin/m4/parser.y @@ -18,6 +18,7 @@ * $FreeBSD$ */ #include <stdint.h> +#include <math.h> #define YYSTYPE int32_t extern int32_t end_result; extern int yylex(void); @@ -34,6 +35,7 @@ extern int yyparse(void); %left EQ NE %left '<' LE '>' GE %left LSHIFT RSHIFT +%right EXPONENT %left '+' '-' %left '*' '/' '%' %right UMINUS UPLUS '!' '~' @@ -44,6 +46,7 @@ top : expr { end_result = $1; } ; expr : expr '+' expr { $$ = $1 + $3; } | expr '-' expr { $$ = $1 - $3; } + | expr EXPONENT expr { $$ = pow($1, $3); } | expr '*' expr { $$ = $1 * $3; } | expr '/' expr { if ($3 == 0) { |
