TOPDIR=../..

include ../Makefile.global

NAME = statmath

PROGRAM =

OBJS = $(NAME).o

DOCS = README.$(NAME)

SQLS = $(NAME).sql

BINS =

EXAMPLES=

MODS = $(NAME)$(DLSUFFIX)

CFLAGS += -I. $(CFLAGS_SL)

OTHER_CLEAN = $(SQLS)

all: $(MODS) $(SQLS)

%.sql: %.sql.in

$(SED) "s|MODULE_PATHNAME|$(CONTRIB_MODDIR)/$(NAME)$(DLSUFFIX)|" < $< > $@

install: install_doc install_sql install_mod install_bin

install_doc:

for inst_file in $(DOCS); do \

$(INSTALL) $(INSTL_LIB_OPTS) $$inst_file $(CONTRIB_DOCDIR); \

done

install_sql:

for inst_file in $(SQLS); do \

$(INSTALL) $(INSTL_LIB_OPTS) $$inst_file $(CONTRIB_SQLDIR); \

done

install_mod:

for inst_file in $(MODS); do \

$(INSTALL) $(INSTL_SHLIB_OPTS) $$inst_file $(CONTRIB_MODDIR); \

done

install_bin:

for inst_file in $(BINS); do \

$(INSTALL) $(INSTL_EXE_OPTS) $$inst_file $(CONTRIB_BINDIR); \

done

depend dep:

$(CC) -MM -MG $(CFLAGS) *.c > depend

clean:

$(RM) *~ $(OBJS) $(MODS) $(PROGRAM) depend $(OTHER_CLEAN) core log

ifeq (depend,$(wildcard depend))

include depend

Statistical aggregate functions for PostgreSQL.

This module provides some aggregate functions for statistical

mathematics. A new datatype holding two double precision

floating point values is required by them.

The aggregates are:

average(float8) average value computed by

n

___

_ 1 \

x = --- > x

n /__ i

i=1

variance(float8 variance computed by

n

___

2 1 \ _ 2

s = --- > (x - x)

n-1 /__ i

i=1

stddev(float8) standard deviation computed by

_____

/ 2

s = / s

\/

--

Jan Wieck <JanWieck@Yahoo.com>