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authorTom Lane2023-01-08 21:25:25 +0000
committerTom Lane2023-01-08 21:25:33 +0000
commit5687e7810f1dd32ac1960e67b608c441d87bc229 (patch)
treebd3bf40bca4bf0f09d83869b6aaf564b6a873aae /src/include/utils
parentcd9479af2af25d7fa9bfd24dd4dcf976b360f077 (diff)
Doc: improve commentary about providing our own definitions of M_PI.
Diffstat (limited to 'src/include/utils')
-rw-r--r--src/include/utils/float.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/utils/float.h b/src/include/utils/float.h
index 61d40af2a3..7529899d63 100644
--- a/src/include/utils/float.h
+++ b/src/include/utils/float.h
@@ -17,8 +17,8 @@
#include <math.h>
+/* X/Open (XSI) requires <math.h> to provide M_PI, but core POSIX does not */
#ifndef M_PI
-/* From my RH5.2 gcc math.h file - thomas 2000-04-03 */
#define M_PI 3.14159265358979323846
#endif