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Code Issues Releases Wiki Activity

parser:: extra functions: to01 and ifp

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Zeno Rogue
2019-01-28 21:42:42 +01:00
parent 9f88c6b81c
commit 9de7aa27c5
1 changed files with 10 additions and 1 deletions
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11
util.cpp
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@@ -167,6 +167,15 @@ cld exp_parser::parse(int prio) {
else if(eat("conj(")) res = std::conj(parsepar());
else if(eat("floor(")) res = floor(real(parsepar()));
else if(eat("frac(")) { res = parsepar(); res = res - floor(real(res)); }
else if(eat("to01(")) { res = parsepar(); return atan(res) / M_PI + 0.5; }
else if(eat("ifp(")) {
cld cond = parse(0);
if(next() != ',') {at = -1; return 0; } at++;
cld yes = parse(0);
if(next() != ',') {at = -1; return 0; } at++;
cld no = parsepar();
return real(cond) > 0 ? yes : no;
}
else if(eat("let(")) {
string name;
while(true) {
@@ -238,7 +247,7 @@ ld parseld(const string& s) {
string parser_help() {
return XLAT("Functions available: %1",
"(a)sin(h), (a)cos(h), (a)tan(h), exp, log, abs, re, im, conj, let(t=...,...t...), floor, frac, e, i, pi, s, ms, mousex, mousey, mousez");
"(a)sin(h), (a)cos(h), (a)tan(h), exp, log, abs, re, im, conj, let(t=...,...t...), floor, frac, e, i, pi, s, ms, mousex, mousey, mousez, to01, ifp(a,v,w) [if positive]");
}
logger hlog;