Merge pull request #13 from rustprooflabs/add-ttt-function-for-routing-costs

Add Travel Time function. Inputs: meters & km/hr; Outputs: seconds

Author: rustprooflabs

LICENSE.md

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2022-2025 Ryan Lambert, RustProof Labs
+Copyright (c) 2022-2026 Ryan Lambert, RustProof Labs
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

src/lib.rs

@@ -94,6 +94,13 @@ fn ttt_meters_m_s(length_meters: f64, meters_per_second: f64) -> f64 {
     length_meters / meters_per_second
 }
 
+#[pg_extern(immutable)]
+fn ttt_meters_km_hr_to_seconds(
+    length_meters: f64
+    , km_per_hour: f64
+) -> f64 {
+    length_meters / speed_kmhr_to_m_s(km_per_hour)
+}
 
 /////////////////////////////
 // Power conversions

src/sql/comments.sql

@@ -16,6 +16,7 @@ COMMENT ON FUNCTION convert.speed_mph_to_m_s IS 'Speed conversion: miles per hou
 COMMENT ON FUNCTION convert.speed_m_s_to_mph IS 'Speed conversion: meters per second to miles per hour';
 COMMENT ON FUNCTION convert.speed_m_s_to_kmhr IS 'Speed conversion: meters per second to kilometers per hour';
 COMMENT ON FUNCTION convert.ttt_meters_m_s IS 'Time To Travel: Input uses meters and meters-per-second (m_s). Returns seconds.';
+COMMENT ON FUNCTION convert.ttt_meters_km_hr_to_seconds IS 'Time To Travel: Input uses meters and kilometers per hour. Returns seconds.';
 
 COMMENT ON FUNCTION convert.power_dbm_to_watts IS 'Power conversion: dBm to Watts';
 COMMENT ON FUNCTION convert.power_watts_to_dbm IS 'Power conversion: Watts to dBm';