From 7326815dee2d01454eac57ad5379a6f4a1aa67ef Mon Sep 17 00:00:00 2001
From: Nikhil Woodruff <35577657+nikhilwoodruff@users.noreply.github.com>
Date: Wed, 9 Sep 2020 11:15:12 +0100
Subject: [PATCH 1/2] Add negative input handling

---
 ballpark/utils.py | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/ballpark/utils.py b/ballpark/utils.py
index d012f6f..e4697b4 100644
--- a/ballpark/utils.py
+++ b/ballpark/utils.py
@@ -78,7 +78,6 @@ def quantize(number, digits=0, q=builtins.round):
 def repel(value):
     return math.copysign(max(abs(value), 1e-24), value)
 
-
 def unwrap(fn):
     @functools.wraps(fn)
     def unwrapped_function(values, *vargs, **kwargs):
@@ -87,7 +86,15 @@ def unwrapped_function(values, *vargs, **kwargs):
         if scalar:
             values = [values]
 
-        results = fn(values, *vargs, **kwargs)
+        # Handle negative inputs by converting to positive, then correcting the output
+
+        is_negative = list(map(lambda x : x < 0, values))
+        multipliers = [-1 if negative else 1 for negative in is_negative]
+        positive_inputs = [value * multiplier for value, multiplier in zip(values, multipliers)]
+
+        positive_results = fn(positive_inputs, *vargs, **kwargs)
+
+        results = ["-" + positive_result if negative else positive_result for positive_result, negative in zip(positive_results, is_negative)]
 
         if scalar:
             results = results[0]

From 77349a8d74d90834a39cecefc204fc14d03f4d76 Mon Sep 17 00:00:00 2001
From: Nikhil Woodruff <35577657+nikhilwoodruff@users.noreply.github.com>
Date: Wed, 9 Sep 2020 11:16:51 +0100
Subject: [PATCH 2/2] Replace removed whitespace

---
 ballpark/utils.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ballpark/utils.py b/ballpark/utils.py
index e4697b4..18a0489 100644
--- a/ballpark/utils.py
+++ b/ballpark/utils.py
@@ -78,6 +78,7 @@ def quantize(number, digits=0, q=builtins.round):
 def repel(value):
     return math.copysign(max(abs(value), 1e-24), value)
 
+
 def unwrap(fn):
     @functools.wraps(fn)
     def unwrapped_function(values, *vargs, **kwargs):