ftp.nice.ch/pub/next/unix/audio/cmusic.bs.N.tar.gz#/src/cmusic/ug.inv.c

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/* Invert unit generator */

#include "ug.head.h"

#define IN 1

inv

UGHEAD{
    UGINIT;
    UGLOOP{
	VAL(OUT)++ = 1.0 - VAL(IN);
	UGEND(1)
    }
}

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.