/usr/share/puredata/doc/5.reference/math-help.pd is in puredata-core 0.48.1-3.
This file is owned by root:root, with mode 0o644.
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#X obj 71 208 sin;
#X floatatom 71 123 0 0 0 0 - - -;
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#X obj 71 175 * 6.28319;
#X obj 71 149 / 360;
#X obj 140 210 cos;
#X obj 223 214 tan;
#X obj 42 544 sqrt;
#X obj 122 352 atan;
#X obj 129 544 log;
#X obj 197 544 exp;
#X obj 293 544 abs;
#X obj 231 346 float;
#X obj 288 346 t b f;
#X obj 231 375 atan2;
#X text 29 269 The arc tangent takes two forms. The atan2 version takes
an (x \, y) pair and gives you an output between -pi and pi.;
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#X obj 393 544 wrap;
#X text 39 433 also \, square root \, natural logarithm and exponential
\, and absolute value. The "wrap" object wraps the input to a value
between 0 and 1 (including negative numbers. For instance \, -0.2 maps
to 0.8.);
#X text 16 87 Unlike the signal version cos~ \, control-rate trig functions
take inputs in radians:;
#X text 311 612 updated for Pd version 0.46;
#X text 11 612 see also:;
#X obj 99 611 cos~;
#X text 19 37 Pd offers the mathematical functions sin \, cos \, tan
\, atan \, atan2 \, sqrt \, log \, exp \, abs \, and wrap.;
#X text 174 6 math function in Pd;
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