From 0f8bd8dfd5561f1e7e3ad4408071c9248cac4bd8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=91=D1=80=D0=B0=D0=BD=D0=B8=D0=BC=D0=B8=D1=80=20=D0=9A?=
 =?UTF-8?q?=D0=B0=D1=80=D0=B0=D1=9F=D0=B8=D1=9B?=
 <branimirkaradzic@gmail.com>
Date: Wed, 1 Dec 2021 18:57:24 -0800
Subject: [PATCH] Fixed issue #267.

---
 src/string.cpp           | 7 +++++--
 tests/string_test.cpp    | 1 +
 tests/vsnprintf_test.cpp | 4 +++-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/string.cpp b/src/string.cpp
index b95c69c..d5caf6f 100644
--- a/src/string.cpp
+++ b/src/string.cpp
@@ -887,10 +887,11 @@ namespace bx
 			const char* dot = strFind(str, INT32_MAX, '.');
 			if (NULL != dot)
 			{
-				const int32_t prec = INT32_MAX == _param.prec ? 6 : _param.prec;
+				const int32_t prec = INT32_MAX == _param.prec ? len-(dot+1-str) : _param.prec;
+
 				const int32_t precLen = int32_t(
 						dot
-						+ uint32_min(prec + _param.spec, 1)
+						+ min(prec + _param.spec, 1)
 						+ prec
 						- str
 						);
@@ -900,8 +901,10 @@ namespace bx
 					{
 						str[ii] = '0';
 					}
+
 					str[precLen] = '\0';
 				}
+
 				len = precLen;
 			}
 
diff --git a/tests/string_test.cpp b/tests/string_test.cpp
index 5524d91..48231bf 100644
--- a/tests/string_test.cpp
+++ b/tests/string_test.cpp
@@ -333,6 +333,7 @@ TEST_CASE("toString double", "")
 	REQUIRE(testToString(-270.000000,             "-270.0") );
 	REQUIRE(testToString(2.225073858507201e-308,  "2.225073858507201e-308") );
 	REQUIRE(testToString(-79.39773355813419,      "-79.39773355813419") );
+	REQUIRE(testToString(-1.234567e-9,            "-1.234567e-9") );
 }
 
 template<typename Ty>
diff --git a/tests/vsnprintf_test.cpp b/tests/vsnprintf_test.cpp
index 775d6d2..4b5e2c0 100644
--- a/tests/vsnprintf_test.cpp
+++ b/tests/vsnprintf_test.cpp
@@ -72,9 +72,11 @@ TEST_CASE("vsnprintf f")
 	REQUIRE(test("0001.500", "%08.3f",   1.5) );
 	REQUIRE(test("+001.500", "%+08.3f",  1.5) );
 	REQUIRE(test("-001.500", "%+08.3f", -1.5) );
-	REQUIRE(test("0.003906", "%f",       0.00390625) );
 	REQUIRE(test("0.0039",   "%.4f",     0.00390625) );
 
+	REQUIRE(test("0.00390625",   "%f",   0.00390625) );
+	REQUIRE(test("-1.234567e-9", "%f",  -1.234567e-9) );
+
 	REQUIRE(test("0.00390625",          "%.8f",  0.00390625) );
 	REQUIRE(test("-0.00390625",         "%.8f", -0.00390625) );
 	REQUIRE(test("1.50000000000000000", "%.17f", 1.5) );