PERF: more realistic np datetime c benchmark (#58165)

* make input range for np_datetime.c benchmark more realistic

* fix random numbers

* fix import

* add new benchmark

Author: dontgoto

asv_bench/benchmarks/tslibs/fields.py

@@ -19,10 +19,15 @@ class TimeGetTimedeltaField:
     def setup(self, size, field):
         arr = np.random.randint(0, 10, size=size, dtype="i8")
         self.i8data = arr
+        arr = np.random.randint(-86400 * 1_000_000_000, 0, size=size, dtype="i8")
+        self.i8data_negative = arr
 
     def time_get_timedelta_field(self, size, field):
         get_timedelta_field(self.i8data, field)
 
+    def time_get_timedelta_field_negative_td(self, size, field):
+        get_timedelta_field(self.i8data_negative, field)
+
 
 class TimeGetDateField:
     params = [
@@ -72,3 +77,6 @@ def setup(self, size, side, period, freqstr, month_kw):
 
     def time_get_start_end_field(self, size, side, period, freqstr, month_kw):
         get_start_end_field(self.i8data, self.attrname, freqstr, month_kw=month_kw)
+
+
+from ..pandas_vb_common import setup  # noqa: F401 isort:skip