math: quantile estimator using P-Squared algorithm.

* Makefile (psquare.o): New object file.

* arith.c (psq_ops): New static structure.
(quant_fun): New static function.
(quantile): New function.
(arith_init): Register quantile intrinsic.

* arith.h (quantile): Declared.

* psquare.c, psquare.h: New files.

* tests/016/arith.tl: New tests.

* txr.1: Documented.

* stdlib/doc-syms.tl: Updated.

1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index bf79d15b..d8bc6797 100644
--- a/Makefile
+++ b/Makefile
@@ -55,7 +55,7 @@ OBJS := txr.o lex.yy.o y.tab.o match.o lib.o regex.o gc.o unwind.o stream.o
 OBJS += arith.o hash.o utf8.o filter.o eval.o parser.o rand.o combi.o sysif.o
 OBJS += args.o lisplib.o cadr.o struct.o itypes.o buf.o jmp.o protsym.o ffi.o
 OBJS += strudel.o vm.o chksum.o chksums/sha256.o chksums/crc32.o chksums/md5.o
-OBJS += tree.o time.o
+OBJS += tree.o time.o psquare.o
 OBJS += linenoise/linenoise.o
 OBJS-$(debug_support) += debug.o
 OBJS-$(have_syslog) += syslog.o