Subject: [PATCH v2] remove #include <math.h> where not needed

From: Álvaro Herrera <[email-masked]>
Date: Thu, 15 Jan 2026 14:33:29 +0100

Discussion: https://postgr.es/m/[email-masked]
---
 contrib/btree_gist/btree_numeric.c        | 1 -
 contrib/btree_gist/btree_utils_var.c      | 1 -
 contrib/intarray/_intbig_gist.c           | 2 --
 contrib/ltree/_ltree_gist.c               | 2 --
 contrib/seg/segparse.y                    | 1 -
 src/backend/access/heap/vacuumlazy.c      | 2 --
 src/backend/access/transam/xlogrecovery.c | 1 -
 src/backend/access/transam/xlogwait.c     | 1 -
 src/backend/commands/define.c             | 1 -
 src/backend/executor/nodeBitmapHeapscan.c | 2 --
 src/backend/executor/nodeSubplan.c        | 2 --
 src/backend/lib/knapsack.c                | 1 -
 src/backend/nodes/readfuncs.c             | 2 --
 src/backend/optimizer/geqo/geqo_eval.c    | 1 -
 src/backend/optimizer/geqo/geqo_pool.c    | 1 -
 src/backend/optimizer/path/indxpath.c     | 2 --
 src/backend/optimizer/path/joinpath.c     | 2 --
 src/backend/optimizer/plan/createplan.c   | 2 --
 src/backend/optimizer/util/pathnode.c     | 2 --
 src/backend/statistics/mcv.c              | 2 --
 src/backend/utils/adt/numutils.c          | 1 -
 src/backend/utils/adt/tid.c               | 1 -
 src/common/binaryheap.c                   | 2 --
 src/include/utils/date.h                  | 2 --
 24 files changed, 37 deletions(-)

diff --git a/contrib/btree_gist/btree_numeric.c b/contrib/btree_gist/btree_numeric.c
index 052f27b0794..7ca097abb74 100644
--- a/contrib/btree_gist/btree_numeric.c
+++ b/contrib/btree_gist/btree_numeric.c
@@ -3,7 +3,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
 #include <float.h>
 
 #include "btree_gist.h"
diff --git a/contrib/btree_gist/btree_utils_var.c b/contrib/btree_gist/btree_utils_var.c
index 40e06ae4908..6847e4e54d5 100644
--- a/contrib/btree_gist/btree_utils_var.c
+++ b/contrib/btree_gist/btree_utils_var.c
@@ -3,7 +3,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
 #include <limits.h>
 #include <float.h>
 
diff --git a/contrib/intarray/_intbig_gist.c b/contrib/intarray/_intbig_gist.c
index 0afa8a73b68..6d6ff7413f9 100644
--- a/contrib/intarray/_intbig_gist.c
+++ b/contrib/intarray/_intbig_gist.c
@@ -3,8 +3,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
-
 #include "_int.h"
 #include "access/gist.h"
 #include "access/reloptions.h"
diff --git a/contrib/ltree/_ltree_gist.c b/contrib/ltree/_ltree_gist.c
index ceb92a6304d..6383b37e53f 100644
--- a/contrib/ltree/_ltree_gist.c
+++ b/contrib/ltree/_ltree_gist.c
@@ -7,8 +7,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
-
 #include "access/gist.h"
 #include "access/reloptions.h"
 #include "access/stratnum.h"
diff --git a/contrib/seg/segparse.y b/contrib/seg/segparse.y
index 0358ddb182c..a3dbd0cdbd6 100644
--- a/contrib/seg/segparse.y
+++ b/contrib/seg/segparse.y
@@ -4,7 +4,6 @@
 #include "postgres.h"
 
 #include <float.h>
-#include <math.h>
 
 #include "fmgr.h"
 #include "nodes/miscnodes.h"
diff --git a/src/backend/access/heap/vacuumlazy.c b/src/backend/access/heap/vacuumlazy.c
index 2086a577199..1fcb212ab3d 100644
--- a/src/backend/access/heap/vacuumlazy.c
+++ b/src/backend/access/heap/vacuumlazy.c
@@ -129,8 +129,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
-
 #include "access/genam.h"
 #include "access/heapam.h"
 #include "access/htup_details.h"
diff --git a/src/backend/access/transam/xlogrecovery.c b/src/backend/access/transam/xlogrecovery.c
index 0b5f871abe7..117d8d8bb6b 100644
--- a/src/backend/access/transam/xlogrecovery.c
+++ b/src/backend/access/transam/xlogrecovery.c
@@ -25,7 +25,6 @@
 #include "postgres.h"
 
 #include <ctype.h>
-#include <math.h>
 #include <time.h>
 #include <sys/stat.h>
 #include <sys/time.h>
diff --git a/src/backend/access/transam/xlogwait.c b/src/backend/access/transam/xlogwait.c
index cab7e5082dc..d286ff63123 100644
--- a/src/backend/access/transam/xlogwait.c
+++ b/src/backend/access/transam/xlogwait.c
@@ -47,7 +47,6 @@
 #include "postgres.h"
 
 #include <float.h>
-#include <math.h>
 
 #include "access/xlog.h"
 #include "access/xlogrecovery.h"
diff --git a/src/backend/commands/define.c b/src/backend/commands/define.c
index 8313431397f..4172cc9bacb 100644
--- a/src/backend/commands/define.c
+++ b/src/backend/commands/define.c
@@ -20,7 +20,6 @@
 #include "postgres.h"
 
 #include <ctype.h>
-#include <math.h>
 
 #include "catalog/namespace.h"
 #include "commands/defrem.h"
diff --git a/src/backend/executor/nodeBitmapHeapscan.c b/src/backend/executor/nodeBitmapHeapscan.c
index 2c68327cb29..c68c26cbf38 100644
--- a/src/backend/executor/nodeBitmapHeapscan.c
+++ b/src/backend/executor/nodeBitmapHeapscan.c
@@ -35,8 +35,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
-
 #include "access/relscan.h"
 #include "access/tableam.h"
 #include "access/visibilitymap.h"
diff --git a/src/backend/executor/nodeSubplan.c b/src/backend/executor/nodeSubplan.c
index 5e510c73926..8285c7101c2 100644
--- a/src/backend/executor/nodeSubplan.c
+++ b/src/backend/executor/nodeSubplan.c
@@ -26,8 +26,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
-
 #include "access/htup_details.h"
 #include "executor/executor.h"
 #include "executor/nodeSubplan.h"
diff --git a/src/backend/lib/knapsack.c b/src/backend/lib/knapsack.c
index 1a770b907ec..586f1881fd5 100644
--- a/src/backend/lib/knapsack.c
+++ b/src/backend/lib/knapsack.c
@@ -24,7 +24,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
 #include <limits.h>
 
 #include "lib/knapsack.h"
diff --git a/src/backend/nodes/readfuncs.c b/src/backend/nodes/readfuncs.c
index c11728c0f17..981ab9c34ef 100644
--- a/src/backend/nodes/readfuncs.c
+++ b/src/backend/nodes/readfuncs.c
@@ -26,8 +26,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
-
 #include "miscadmin.h"
 #include "nodes/bitmapset.h"
 #include "nodes/readfuncs.h"
diff --git a/src/backend/optimizer/geqo/geqo_eval.c b/src/backend/optimizer/geqo/geqo_eval.c
index db2332e2364..56ad3df98fa 100644
--- a/src/backend/optimizer/geqo/geqo_eval.c
+++ b/src/backend/optimizer/geqo/geqo_eval.c
@@ -23,7 +23,6 @@
 
 #include <float.h>
 #include <limits.h>
-#include <math.h>
 
 #include "optimizer/geqo.h"
 #include "optimizer/joininfo.h"
diff --git a/src/backend/optimizer/geqo/geqo_pool.c b/src/backend/optimizer/geqo/geqo_pool.c
index fc43406d0c1..f330c739d3d 100644
--- a/src/backend/optimizer/geqo/geqo_pool.c
+++ b/src/backend/optimizer/geqo/geqo_pool.c
@@ -25,7 +25,6 @@
 
 #include <float.h>
 #include <limits.h>
-#include <math.h>
 
 #include "optimizer/geqo_copy.h"
 #include "optimizer/geqo_pool.h"
diff --git a/src/backend/optimizer/path/indxpath.c b/src/backend/optimizer/path/indxpath.c
index 51b9d6677d3..29cb60d6b35 100644
--- a/src/backend/optimizer/path/indxpath.c
+++ b/src/backend/optimizer/path/indxpath.c
@@ -15,8 +15,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
-
 #include "access/stratnum.h"
 #include "access/sysattr.h"
 #include "access/transam.h"
diff --git a/src/backend/optimizer/path/joinpath.c b/src/backend/optimizer/path/joinpath.c
index 7a247493a39..36973eab3be 100644
--- a/src/backend/optimizer/path/joinpath.c
+++ b/src/backend/optimizer/path/joinpath.c
@@ -14,8 +14,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
-
 #include "executor/executor.h"
 #include "foreign/fdwapi.h"
 #include "nodes/nodeFuncs.h"
diff --git a/src/backend/optimizer/plan/createplan.c b/src/backend/optimizer/plan/createplan.c
index af41ca69929..eb4806b084a 100644
--- a/src/backend/optimizer/plan/createplan.c
+++ b/src/backend/optimizer/plan/createplan.c
@@ -16,8 +16,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
-
 #include "access/sysattr.h"
 #include "catalog/pg_class.h"
 #include "foreign/fdwapi.h"
diff --git a/src/backend/optimizer/util/pathnode.c b/src/backend/optimizer/util/pathnode.c
index 2e9becf3116..0f12421bac0 100644
--- a/src/backend/optimizer/util/pathnode.c
+++ b/src/backend/optimizer/util/pathnode.c
@@ -14,8 +14,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
-
 #include "access/htup_details.h"
 #include "executor/nodeSetOp.h"
 #include "foreign/fdwapi.h"
diff --git a/src/backend/statistics/mcv.c b/src/backend/statistics/mcv.c
index 9749871b18e..e5ac422c1b4 100644
--- a/src/backend/statistics/mcv.c
+++ b/src/backend/statistics/mcv.c
@@ -14,8 +14,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
-
 #include "access/htup_details.h"
 #include "catalog/pg_statistic_ext.h"
 #include "catalog/pg_statistic_ext_data.h"
diff --git a/src/backend/utils/adt/numutils.c b/src/backend/utils/adt/numutils.c
index b35e381b0be..47c2e21e6b3 100644
--- a/src/backend/utils/adt/numutils.c
+++ b/src/backend/utils/adt/numutils.c
@@ -14,7 +14,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
 #include <limits.h>
 #include <ctype.h>
 
diff --git a/src/backend/utils/adt/tid.c b/src/backend/utils/adt/tid.c
index c627b385eec..07248b69e57 100644
--- a/src/backend/utils/adt/tid.c
+++ b/src/backend/utils/adt/tid.c
@@ -17,7 +17,6 @@
  */
 #include "postgres.h"
 
-#include <math.h>
 #include <limits.h>
 
 #include "access/sysattr.h"
diff --git a/src/common/binaryheap.c b/src/common/binaryheap.c
index d2be882e65c..78823ff00f8 100644
--- a/src/common/binaryheap.c
+++ b/src/common/binaryheap.c
@@ -17,8 +17,6 @@
 #include "postgres.h"
 #endif
 
-#include <math.h>
-
 #ifdef FRONTEND
 #include "common/logging.h"
 #endif
diff --git a/src/include/utils/date.h b/src/include/utils/date.h
index 1c5dfc94ee6..6063810891e 100644
--- a/src/include/utils/date.h
+++ b/src/include/utils/date.h
@@ -14,8 +14,6 @@
 #ifndef DATE_H
 #define DATE_H
 
-#include <math.h>
-
 #include "datatype/timestamp.h"
 #include "fmgr.h"
 #include "pgtime.h"
-- 
2.47.3

--uzfvjzgwtlw4oib4--