From 2d7d2f09189d57b47863d2ce89b6a450f4402681 Mon Sep 17 00:00:00 2001
From: Julian Weigt <juw@posteo.de>
Date: Fri, 16 Jan 2026 19:05:23 +0100
Subject: Finish all printing including latex and niceties for printing 0 and 1
 and such.

---
 ratio.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

(limited to 'ratio.c')

diff --git a/ratio.c b/ratio.c
index 92e39d8..b25b221 100644
--- a/ratio.c
+++ b/ratio.c
@@ -137,14 +137,35 @@ double valuetype_to_double(rational r){
 	return i*((double)r.n)/((double)r.d);
 }
 
-int to_string(char* s, rational r){
+int valuetype_to_string(char* s, rational r){
 	double f = valuetype_to_double(r);
 	sprintf(s,"%llu / %llu = %f… +/- %6.1e",r.n,r.d,f,f*DBL_EPSILON);
 	return 0;
 }
 
+int valuetype_to_latex(char* s, rational r){
+	if(r.d == 1) {
+		if(r.n == 0) sprintf(s,"$0$");
+		else if(r.s) sprintf(s,"$-%lld$",r.n);
+		else if(!r.s) sprintf(s,"$%lld$",r.n);
+	}
+	else{
+		double f = valuetype_to_double(r);
+		sprintf(s,"$\\frac{%llu}{%llu} = %4.3f\\ldots$",r.n,r.d,f);
+		//sprintf(s,"$\\frac{%llu}{%llu} = %3.2f\\ldots \\pm  %1.0e$",r.n,r.d,f,f*DBL_EPSILON);
+	}
+	return 0;
+}
+
 int root_to_string(char* s, rational r, unsigned int p){
 	double f = pow(valuetype_to_double(r),1.0/p);
 	sprintf(s,"(%llu / %llu)^1/%i = %f… +/- %6.1e",r.n,r.d,p,f,2*DBL_EPSILON*f);
 	return 0;
 }
+
+int root_to_latex(char* s, rational r, unsigned int p){
+	double f = pow(valuetype_to_double(r),1.0/p);
+	sprintf(s,"$\\bigl(\\frac{%llu}{%llu}\\bigr)^{\\frac1{%i}} = %4.3f\\ldots$",r.n,r.d,p,f);
+	//sprintf(s,"$\\bigl(\\frac{%llu}{%llu}\\bigr)^{\\frac1{%i}} = %3.2f\\ldots \\pm  %1.0e$",r.n,r.d,p,f,2*DBL_EPSILON*f);
+	return 0;
+}
-- 
cgit v1.2.3