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	trange(1): allow negative numbers in range - numtools - perform numerical opera…
	git clone git://src.adamsgaard.dk/numtools
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	---
	commit 4e01195c6096ced645b0f533565700537a208a5b
	parent e9477a50184a9679dc571a1e22194e4d0e672a4d
	Author: Anders Damsgaard <[email protected]>
	Date: Mon, 2 May 2022 15:02:46 +0200

	range(1): allow negative numbers in range

	Diffstat:
	M range.1 \| 12 ++++++++++++
	M range.c \| 6 ++----

	2 files changed, 14 insertions(+), 4 deletions(-)
	---
	diff --git a/range.1 b/range.1
	t@@ -30,6 +30,11 @@ is not specified, it is 1.
	If
	.Ar min_val
	is not specified, it is 0.
	+If
	+.Ar min_val
	+and/or
	+.Ar max_val
	+are negative, they must be prefixed with the '--' option.
	.Pp
	The options are as follows:
	.Bl -tag -width Ds
	t@@ -113,6 +118,13 @@ Generate three numbers evenly distributed in logspace fro…
	.Dl 1
	.Dl 10
	.Dl 100
	+.Pp
	+Generate three numbers in the range [-2;-1]:
	+.Pp
	+.Dl $ range -n 3 -- -2 -1
	+.Dl -2
	+.Dl -1.5
	+.Dl -1
	.Sh SEE ALSO
	.Xr max 1 ,
	.Xr mean 1 ,
	diff --git a/range.c b/range.c
	t@@ -13,7 +13,7 @@ char *argv0;
	static void
	usage(void)
	{
	- errx(1, "usage: %s [-b] [-e] [-f fmtstr] [-h] [-l] [-n num] [-s]"
	+ errx(1, "usage: %s [-b] [-e] [-f fmtstr] [-h] [-l] [-n num] [-s] "
	"[[min_val] max_val]\n", argv0);
	}

	t@@ -61,13 +61,11 @@ main(int argc, char *argv[])
	} else if (argc == 1)
	maxv = atof(argv[0]);

	- dx = (maxv - minv)/(n - 1 + openend + openstart);
	+ dx = (maxv - minv) / (n - 1 + openend + openstart);
	if (reportdx) {
	printf(fmtstr, dx);
	return 0;
	}
	- if (minv >= maxv)
	- errx(1, "min_val must be smaller than max_val");
	for (i = 0 + openstart; i < n + openstart; i++) {
	if (logrange)
	printf(fmtstr, pow(10, minv + i * dx));