Test cases from Cowlishaw, v2.57. All are pased cleanly.
diff --git a/Lib/test/decimaltestdata/ddRemainderNear.decTest b/Lib/test/decimaltestdata/ddRemainderNear.decTest
index 1f3bafd..dfcd3eb 100644
--- a/Lib/test/decimaltestdata/ddRemainderNear.decTest
+++ b/Lib/test/decimaltestdata/ddRemainderNear.decTest
@@ -17,7 +17,7 @@
-- IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK --
-- mfc@uk.ibm.com --
------------------------------------------------------------------------
-version: 2.56
+version: 2.57
precision: 16
maxExponent: 384
@@ -599,6 +599,7 @@
ddrmn980 remaindernear 123e1 1000E299 -> 1.23E+3 -- 123E+1 internally
+
-- overflow and underflow tests [from divide]
ddrmn1051 remaindernear 1e+277 1e-311 -> NaN Division_impossible
ddrmn1052 remaindernear 1e+277 -1e-311 -> NaN Division_impossible
@@ -609,6 +610,19 @@
ddrmn1057 remaindernear -1e-277 1e+311 -> -1E-277
ddrmn1058 remaindernear -1e-277 -1e+311 -> -1E-277
+-- destructive subtract
+ddrmn1100 remainderNear 1234567890123456 1.000000000000001 -> -0.234567890123455
+ddrmn1101 remainderNear 1234567890123456 1.00000000000001 -> -0.34567890123444
+ddrmn1102 remainderNear 1234567890123456 1.0000000000001 -> -0.4567890123333
+ddrmn1103 remainderNear 1234567890123455 4.000000000000001 -> -1.308641972530864
+ddrmn1104 remainderNear 1234567890123456 4.000000000000001 -> -0.308641972530864
+ddrmn1115 remainderNear 1234567890123456 4.9999999999999 -> 0.6913578024696
+ddrmn1116 remainderNear 1234567890123456 4.99999999999999 -> -1.53086421975308
+ddrmn1117 remainderNear 1234567890123456 4.999999999999999 -> 1.246913578024691
+ddrmn1118 remainderNear 1234567890123456 5.000000000000001 -> 0.753086421975309
+ddrmn1119 remainderNear 1234567890123456 5.00000000000001 -> -1.46913578024691
+ddrmn1110 remainderNear 1234567890123456 5.0000000000001 -> 1.3086421975314
+
-- Null tests
ddrmn1000 remaindernear 10 # -> NaN Invalid_operation
ddrmn1001 remaindernear # 10 -> NaN Invalid_operation