Test conversion of NaN between float4 and float8.

Results from buildfarm member opossum suggest that this doesn't work
quite right on that platform.  We've seen issues with NaN support on
MIPS/NetBSD before ... allegedly they fixed this stuff back in 2010,
but maybe only for small values of "fixed".

If, in fact, opossum fails this test then I plan to revert it;
it's mainly for diagnostic purposes rather than something we'd
necessarily keep long-term.  I think that the failures in window.sql
could be worked around with some code duplication, but I want to
verify my theory about the cause first.

diff --git a/src/test/regress/expected/float4-exp-three-digits.out b/src/test/regress/expected/float4-exp-three-digits.out
index f17f95697a293780d7f1902f5303fb8f2d742b5e..ea6f77a671a7debdc5b840d82f16b54a37ec41ce 100644 (file)
--- a/src/test/regress/expected/float4-exp-three-digits.out
+++ b/src/test/regress/expected/float4-exp-three-digits.out
@@ -125,6 +125,18 @@ SELECT 'nan'::numeric::float4;
     NaN
 (1 row)
 
+SELECT 'nan'::float8::float4;
+ float4 
+--------
+    NaN
+(1 row)
+
+SELECT 'nan'::float4::float8;
+ float8 
+--------
+    NaN
+(1 row)
+
 SELECT '' AS five, * FROM FLOAT4_TBL;
  five |      f1      
 ------+--------------

diff --git a/src/test/regress/expected/float4.out b/src/test/regress/expected/float4.out
index fd46a4a1db70da35bac51236c0b76d5f5514b189..ab9b1acd493848c48b1f62f9dc25efb82d57feae 100644 (file)
--- a/src/test/regress/expected/float4.out
+++ b/src/test/regress/expected/float4.out
@@ -125,6 +125,18 @@ SELECT 'nan'::numeric::float4;
     NaN
 (1 row)
 
+SELECT 'nan'::float8::float4;
+ float4 
+--------
+    NaN
+(1 row)
+
+SELECT 'nan'::float4::float8;
+ float8 
+--------
+    NaN
+(1 row)
+
 SELECT '' AS five, * FROM FLOAT4_TBL;
  five |     f1      
 ------+-------------

diff --git a/src/test/regress/sql/float4.sql b/src/test/regress/sql/float4.sql
index 3b363f94635cfc29bcee3c65fe7a6e3031bfc205..e6f5c7425daba2685e1c5e20bd322629fa141f54 100644 (file)
--- a/src/test/regress/sql/float4.sql
+++ b/src/test/regress/sql/float4.sql
@@ -41,6 +41,8 @@ SELECT 'Infinity'::float4 + 100.0;
 SELECT 'Infinity'::float4 / 'Infinity'::float4;
 SELECT 'nan'::float4 / 'nan'::float4;
 SELECT 'nan'::numeric::float4;
+SELECT 'nan'::float8::float4;
+SELECT 'nan'::float4::float8;
 
 SELECT '' AS five, * FROM FLOAT4_TBL;