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	blind-dot-product.c - blind - suckless command-line video editing utility
	git clone git://git.suckless.org/blind
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	---
	blind-dot-product.c (960B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #ifndef TYPE
	3 #include "common.h"
	4
	5 USAGE("right-hand-stream")
	6
	7 #define FILE "blind-dot-product.c"
	8 #include "define-functions.h"
	9
	10 int
	11 main(int argc, char *argv[])
	12 {
	13 struct stream left, right;
	14 void (process)(struct stream left, struct stream *right, size_…
	15
	16 UNOFLAGS(argc != 1);
	17
	18 eopen_stream(&left, NULL);
	19 eopen_stream(&right, argv[0]);
	20
	21 SELECT_PROCESS_FUNCTION(&left);
	22 fprint_stream_head(stdout, &left);
	23 efflush(stdout, "<stdout>");
	24 process_two_streams(&left, &right, STDOUT_FILENO, "<stdout>", pr…
	25 return 0;
	26 }
	27
	28 #else
	29
	30 static void
	31 PROCESS(struct stream left, struct stream right, size_t n)
	32 {
	33 size_t i, j, s = left->n_chan * sizeof(TYPE);
	34 TYPE v, l, r;
	35 for (i = 0; i < n; i += s) {
	36 l = (TYPE *)(left->buf + i);
	37 r = (TYPE *)(right->buf + i);
	38 v = 0;
	39 for (j = 0; j < left->n_chan; j++)
	40 v += l[j] * r[j];
	41 for (j = 0; j < left->n_chan; j++)
	42 l[j] = v;
	43 }
	44 }
	45
	46 #endif