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	treimplement transpose in C - numtools - perform numerical operations on vector…
	git clone git://src.adamsgaard.dk/numtools
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	---
	commit 46e27e9ab6b642fc1ac57cda2e7eacb43956ee24
	parent 941edcb2fd8369e4a60c2e7e32087e500706f600
	Author: Anders Damsgaard <[email protected]>
	Date: Sat, 11 Sep 2021 20:47:06 +0200

	reimplement transpose in C

	Diffstat:
	M Makefile \| 5 +++--
	D transpose \| 15 ---------------
	M transpose.1 \| 15 ++++-----------
	M util.c \| 4 +---
	M util.h \| 3 +++

	5 files changed, 11 insertions(+), 31 deletions(-)
	---
	diff --git a/Makefile b/Makefile
	t@@ -14,10 +14,10 @@ BIN =\
	min\
	rangetest\
	sum\
	+ transpose\

	SCRIPTS =\
	histpdf\
	- transpose\

	SRC =\
	util.c
	t@@ -55,6 +55,7 @@ mean: mean.o
	min: min.o
	rangetest: rangetest.o
	sum: sum.o
	+transpose: transpose.o

	${BIN}: ${LIB} ${OBJ}
	${CC} ${_LDFLAGS} -o $@ ${@:=.o} ${OBJ}
	t@@ -65,7 +66,7 @@ ${BIN}: ${LIB} ${OBJ}
	install:
	# installing executable files and scripts.
	mkdir -p "${DESTDIR}${PREFIX}/bin"
	- cp -f ${SCRIPTS} "${DESTDIR}${PREFIX}/bin"
	+ cp -f ${BIN} ${SCRIPTS} "${DESTDIR}${PREFIX}/bin"
	for f in ${BIN} ${SCRIPTS}; do chmod 755 "${DESTDIR}${PREFIX}/bin/$$f"…
	# installing documentation files.
	mkdir -p "${DESTDIR}${DOCPREFIX}"
	diff --git a/transpose b/transpose
	t@@ -1,15 +0,0 @@
	-#!/usr/bin/awk -f
	-{
	- for (i = 1; i <= NF; i++)
	- d[NR][i] = $i
	-}
	-END {
	- for (i = 1; i <= NF; i++) {
	- for (j = 1; j <= NR; j++) {
	- printf("%s", d[j][i])
	- if (j < NR)
	- printf("\t")
	- }
	- printf("\n")
	- }
	-}
	diff --git a/transpose.1 b/transpose.1
	t@@ -6,20 +6,13 @@
	.Nd interchanges the row and column positions for each field
	.Sh SYNOPSIS
	.Nm
	-.Op Ar
	.Sh DESCRIPTION
	.Nm
	-flips the rows and columns, effectively transposing it around the
	-diagonal axis.
	-This means that an input file with N colums and M rows is output as M
	-colums and N rows.
	-The input is
	-.Ar file
	-or standard input, if no
	-.Ar file
	-is given.
	+flips the rows and columns of a matrix given by standard input,
	+effectively transposing it around the diagonal axis.
	+This means that an input file with N colums and M rows is output
	+as M colums and N rows.
	.Sh SEE ALSO
	-.Xr awk 1 ,
	.Xr max 1 ,
	.Xr mean 1 ,
	.Xr min 1 ,
	diff --git a/util.c b/util.c
	t@@ -1,9 +1,7 @@
	#include <err.h>
	#include <stdlib.h>
	#include <stdio.h>
	-
	-#define DELIM '\t'
	-#define DELIMSTR "\t"
	+#include "util.h"

	size_t
	allocarr(double *arr, const char str, size_t maxlen)
	diff --git a/util.h b/util.h
	t@@ -8,6 +8,9 @@
	#define unveil(p1, p2) 0
	#endif

	+#define DELIM '\t'
	+#define DELIMSTR "\t"
	+
	#undef strlcpy
	size_t strlcpy(char dst, const char src, size_t dsize);