diff options
Diffstat (limited to 'tools/perf/util/expr.y')
| -rw-r--r-- | tools/perf/util/expr.y | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y index bf3e898e3055..fe145344bb39 100644 --- a/tools/perf/util/expr.y +++ b/tools/perf/util/expr.y @@ -10,6 +10,14 @@ #include "smt.h" #include <string.h> +static double d_ratio(double val0, double val1) +{ + if (val1 == 0) { + return 0; + } + return val0 / val1; +} + %} %define api.pure full @@ -28,7 +36,7 @@ %token <num> NUMBER %token <str> ID %destructor { free ($$); } <str> -%token MIN MAX IF ELSE SMT_ON +%token MIN MAX IF ELSE SMT_ON D_RATIO %left MIN MAX IF %left '|' %left '^' @@ -64,7 +72,8 @@ other: ID } | MIN | MAX | IF | ELSE | SMT_ON | NUMBER | '|' | '^' | '&' | '-' | '+' | '*' | '/' | '%' | '(' | ')' | ',' - +| +D_RATIO all_expr: if_expr { *final_val = $1; } ; @@ -105,6 +114,7 @@ expr: NUMBER | MIN '(' expr ',' expr ')' { $$ = $3 < $5 ? $3 : $5; } | MAX '(' expr ',' expr ')' { $$ = $3 > $5 ? $3 : $5; } | SMT_ON { $$ = smt_on() > 0; } + | D_RATIO '(' expr ',' expr ')' { $$ = d_ratio($3,$5); } ; %% |