Doc: improve commentary about providing our own definitions of M_PI.
Branch------master
Details-------https://git.postgresql.org/pg/commitdiff/5687e7810f1dd32ac1960e67b608c441d87bc229
Modified Files--------------contrib/earthdistance/earthdistance.c | 1 +src/bin/pgbench/pgbench.c | 1 +src/include/utils/float.h | 2 +-3 files changed, 3 insertions(+), 1 deletion(-)
