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	tInclude factor for linear exposure scaling - filmtools - various tools for pho…
	git clone git://src.adamsgaard.dk/filmtools
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	---
	commit 08c5774bdd4f60189f2f49e63b713e68758cef53
	parent fdf4f540757312f4e76e5eddbd95f5c2cb9e2691
	Author: Anders Damsgaard <[email protected]>
	Date: Thu, 16 Jul 2020 22:38:29 +0200

	Include factor for linear exposure scaling

	Diffstat:
	M reciprocity.c \| 5 +++--

	1 file changed, 3 insertions(+), 2 deletions(-)
	---
	diff --git a/reciprocity.c b/reciprocity.c
	t@@ -46,7 +46,7 @@ usage()
	int
	main(int argc, char **argv)
	{
	- double exponent;
	+ double factor, exponent;
	int i, hour, min, sec, sec_equiv;

	argv0 = *argv;
	t@@ -65,6 +65,7 @@ main(int argc, char **argv)
	if (i == LENGTH(films))
	errx(3, "unknown film type");
	if (strncasecmp(argv[1], films[i].name, 10) == 0) {
	+ factor = films[i].factor;
	exponent = films[i].exponent;
	break;
	}
	t@@ -73,7 +74,7 @@ main(int argc, char **argv)
	if (sscanf(argv[2], "%d:%d", &min, &sec) != 2)
	errx(2, "could not parse time in MM:SS format");

	- sec_equiv = pow(min * 60 + sec, exponent);
	+ sec_equiv = factor * pow(min * 60 + sec, exponent);
	sec = (int)(sec_equiv) % 60;
	if ((min = (int)(sec_equiv / 60.0)) >= 60) {
	hour = (int)(min/60.0);