diff options
Diffstat (limited to 'tools/perf/util/expr.l')
| -rw-r--r-- | tools/perf/util/expr.l | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/perf/util/expr.l b/tools/perf/util/expr.l index 0feef0726c48..a2fc43159ee9 100644 --- a/tools/perf/util/expr.l +++ b/tools/perf/util/expr.l @@ -94,6 +94,14 @@ static int literal(yyscan_t scanner, const struct expr_scanner_ctx *sctx) } return LITERAL; } + +static int nan_value(yyscan_t scanner) +{ + YYSTYPE *yylval = expr_get_lval(scanner); + + yylval->num = NAN; + return NUMBER; +} %} number ([0-9]+\.?[0-9]*|[0-9]*\.?[0-9]+)(e-?[0-9]+)? @@ -115,6 +123,7 @@ else { return ELSE; } source_count { return SOURCE_COUNT; } has_event { return HAS_EVENT; } strcmp_cpuid_str { return STRCMP_CPUID_STR; } +NaN { return nan_value(yyscanner); } {literal} { return literal(yyscanner, sctx); } {number} { return value(yyscanner); } {symbol} { return str(yyscanner, ID, sctx->runtime); } |