From d1fec505203b4cc1e4a056d0136d730b07c1949d Mon Sep 17 00:00:00 2001
From: Jake Wang <jake.wang@argonlabs.tech>
Date: Fri, 18 Sep 2026 21:06:46 -0400
Subject: [PATCH] Fix the scale of the small-input exponential result

---
 decimal.go      | 2 +-
 decimal_test.go | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/decimal.go b/decimal.go
index ee554d4c..71a28a64 100644
--- a/decimal.go
+++ b/decimal.go
@@ -998,7 +998,7 @@ func (d Decimal) ExpHullAbrham(overallPrecision uint32) (Decimal, error) {
 	// Return 1 if abs(d) small enough; this also avoids later over/underflow
 	overflowThreshold2 := New(9, -int32(currentPrecision)-1)
 	if d.Abs().Cmp(overflowThreshold2) <= 0 {
-		return Decimal{oneInt, d.exp}, nil
+		return Decimal{oneInt, 0}, nil
 	}
 
 	// t is the smallest integer >= 0 such that the corresponding abs(d/k) < 1
diff --git a/decimal_test.go b/decimal_test.go
index 48c1e21d..774ebc38 100644
--- a/decimal_test.go
+++ b/decimal_test.go
@@ -2953,6 +2953,15 @@ func TestDecimal_ExpHullAbrham(t *testing.T) {
 		OverallPrecision uint32
 		ExpectedDec      string
 	}{
+		{"0.000001", 4, "1"},
+		{"-0.000001", 4, "1"},
+		{"0.00000100", 4, "1"},
+		{"-0.00000100", 4, "1"},
+		{"0.00009", 4, "1"},
+		{"0.000000000001", 8, "1"},
+		{"-0.000000000001", 8, "1"},
+		{"0.001", 4, "1.001"},
+		{"-0.001", 4, "0.999"},
 		{"0", 1, "1"},
 		{"0.00", 5, "1"},
 		{"0.5", 5, "1.6487"},