/usr/share/calc/gvec.cal is in apcalc-common 2.12.4.4-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 | /*
* gvec - vectorize any single-input function or trailing operator
*
* This version accepts arbitrary number of arguments, but of course
* they must all be same length vectors.
*
* The gvec function is for use in either a two-arg function or a two-arg
* operation "function" must be first; calc doesn't care how many more
* arguments there actually are.
*
* @(#) $Revision: 30.3 $
* @(#) $Id: gvec.cal,v 30.3 2011/05/23 23:00:55 chongo Exp $
* @(#) $Source: /usr/local/src/cmd/calc/cal/RCS/gvec.cal,v $
*
* Under source code control: 2011/03/31 17:54:55
* File existed as early as: 2010
*
* By Carl Witthoft carl at witthoft dot com
*/
define gvec(function, vector)
{
local xlen,y,foo;
local precx = 1e-50; /* default for now */
local argc = param(0)-1;
local old_tilde; /* previous config("tilde") */
/*
* parse args
*/
local plist = mat[argc];
if (config("resource_debug") & 8) {
print "plist=", plist;
print "argc=", argc;
}
for(local i = 0; i< argc; i++) {
local ii = i + 2;
if (config("resource_debug") & 8) {
print "ii=", ii;
print "param(" : ii : "}=", param(ii);
print "size(param(" : ii : ")=", size(param(ii));
}
plist[i] = size(param(ii));
}
local slist=sort(plist);
if (config("resource_debug") & 8) {
print "plist=", plist;
}
local argm = argc-1;
if (config("resource_debug") & 8) {
print "argm=", argm;
}
if (slist[0] != slist[argm]) {
quit "lengths don't match";
}
xlen = size(vector);
y = mat[xlen];
/*
* We can't do str(vector[j]) outside loop, eval() petulantly refuses to
* look at local variables.
*
* Also we need to config("tilde",0) to turn off lead tilde
* (so str(vector[j]) looks like a number.
*/
old_tilde = config("tilde",0);
/*
* Ok, now check to see if "function" is a function. If not, it's an
* operation and it's up to user to make it valid
*/
if (isdefined(function)) {
/* yep, it's a function, either builtin or user-defined */
for (local j=0; j<xlen; j++) {
/* build the function call */
foo = strcat(function, "(");
for (local jj = 0; jj<argc; jj++) {
foo = strcat(foo , str(param(jj+2)[j]), ",");
}
foo = strcat(foo, str(precx), ")");
if (config("resource_debug") & 8) {
print "foo=", foo;
}
y[j] = eval(foo);
}
/*
* it is an operator -- multi-argument operator makes no sense
*/
} else {
if (argc > 1) {
quit "Error: operator can accept only one argument";
}
for (j=0; j<xlen; j++) {
foo = strcat(str(vector[j]), function);
y[j] = eval(foo);
}
}
/* restore tilde mode if needed */
config("tilde", old_tilde);
/* return result */
return y;
}
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