Messages in this thread Patch in this message | | | Date | Thu, 26 May 2022 19:06:53 -0700 | Subject | [PATCH] perf expr: Allow exponents on floating point values | From | Ian Rogers <> |
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Pass the optional exponent component through to strtod that already supports it. We already have exponents in ScaleUnit and so this adds uniformity.
Reported-by: Zhengjun Xing <zhengjun.xing@linux.intel.com> Signed-off-by: Ian Rogers <irogers@google.com> --- tools/perf/tests/expr.c | 2 ++ tools/perf/util/expr.l | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/tools/perf/tests/expr.c b/tools/perf/tests/expr.c index d54c5371c6a6..5c0032fe93ae 100644 --- a/tools/perf/tests/expr.c +++ b/tools/perf/tests/expr.c @@ -97,6 +97,8 @@ static int test__expr(struct test_suite *t __maybe_unused, int subtest __maybe_u ret |= test(ctx, "2.2 > 2.2", 0); ret |= test(ctx, "2.2 < 1.1", 0); ret |= test(ctx, "1.1 > 2.2", 0); + ret |= test(ctx, "1.1e10 < 1.1e100", 1); + ret |= test(ctx, "1.1e2 > 1.1e-2", 1); if (ret) { expr__ctx_free(ctx); diff --git a/tools/perf/util/expr.l b/tools/perf/util/expr.l index 0a13eb20c814..4dc8edbfd9ce 100644 --- a/tools/perf/util/expr.l +++ b/tools/perf/util/expr.l @@ -91,7 +91,7 @@ static int literal(yyscan_t scanner) } %} -number ([0-9]+\.?[0-9]*|[0-9]*\.?[0-9]+) +number ([0-9]+\.?[0-9]*|[0-9]*\.?[0-9]+)(e-?[0-9]+)? sch [-,=] spec \\{sch} -- 2.36.1.124.g0e6072fb45-goog
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