🐛 Use whole PROBE_TEMP_COMPENSATION values (#22130)

Marlin/Configuration_adv.h

   #define COOLER_MAXTEMP          26  // (°C)
   #define COOLER_DEFAULT_TEMP     16  // (°C)
   #define TEMP_COOLER_HYSTERESIS   1  // (°C) Temperature proximity considered "close enough" to the target
-  #define COOLER_PIN               8  // Laser cooler on/off pin used to control power to the cooling element e.g. TEC, External chiller via relay
+  #define COOLER_PIN               8  // Laser cooler on/off pin used to control power to the cooling element (e.g., TEC, External chiller via relay)
   #define COOLER_INVERTING     false
   #define TEMP_COOLER_PIN         15  // Laser/Cooler temperature sensor pin. ADC is required.
   #define COOLER_FAN                  // Enable a fan on the cooler, Fan# 0,1,2,3 etc.
     //#define USE_TEMP_EXT_COMPENSATION
 
     // Probe temperature calibration generates a table of values starting at PTC_SAMPLE_START
-    // (e.g. 30), in steps of PTC_SAMPLE_RES (e.g. 5) with PTC_SAMPLE_COUNT (e.g. 10) samples.
+    // (e.g., 30), in steps of PTC_SAMPLE_RES (e.g., 5) with PTC_SAMPLE_COUNT (e.g., 10) samples.
 
-    //#define PTC_SAMPLE_START  30.0f
-    //#define PTC_SAMPLE_RES    5.0f
-    //#define PTC_SAMPLE_COUNT  10U
+    //#define PTC_SAMPLE_START  30  // (°C)
+    //#define PTC_SAMPLE_RES     5  // (°C)
+    //#define PTC_SAMPLE_COUNT  10
 
     // Bed temperature calibration builds a similar table.
 
-    //#define BTC_SAMPLE_START  60.0f
-    //#define BTC_SAMPLE_RES    5.0f
-    //#define BTC_SAMPLE_COUNT  10U
+    //#define BTC_SAMPLE_START  60  // (°C)
+    //#define BTC_SAMPLE_RES     5  // (°C)
+    //#define BTC_SAMPLE_COUNT  10
 
     // The temperature the probe should be at while taking measurements during bed temperature
     // calibration.
-    //#define BTC_PROBE_TEMP 30.0f
+    //#define BTC_PROBE_TEMP    30  // (°C)
 
     // Height above Z=0.0f to raise the nozzle. Lowering this can help the probe to heat faster.
     // Note: the Z=0.0f offset is determined by the probe offset which can be set using M851.
     // Height to raise the Z-probe between heating and taking the next measurement. Some probes
     // may fail to untrigger if they have been triggered for a long time, which can be solved by
     // increasing the height the probe is raised to.
-    //#define PTC_PROBE_RAISE 15U
+    //#define PTC_PROBE_RAISE 15
 
     // If the probe is outside of the defined range, use linear extrapolation using the closest
     // point and the PTC_LINEAR_EXTRAPOLATION'th next point. E.g. if set to 4 it will use data[0]
 // @section motion
 
 // The number of linear moves that can be in the planner at once.
-// The value of BLOCK_BUFFER_SIZE must be a power of 2 (e.g. 8, 16, 32)
+// The value of BLOCK_BUFFER_SIZE must be a power of 2 (e.g., 8, 16, 32)
 #if BOTH(SDSUPPORT, DIRECT_STEPPING)
   #define BLOCK_BUFFER_SIZE  8
 #elif ENABLED(SDSUPPORT)

Marlin/src/feature/probe_temp_comp.h

 
 // Probe temperature calibration constants
 #ifndef PTC_SAMPLE_COUNT
-  #define PTC_SAMPLE_COUNT 10U
+  #define PTC_SAMPLE_COUNT 10
 #endif
 #ifndef PTC_SAMPLE_RES
   #define PTC_SAMPLE_RES 5
 #ifndef PTC_SAMPLE_START
   #define PTC_SAMPLE_START 30
 #endif
-#define PTC_SAMPLE_END ((PTC_SAMPLE_START) + (PTC_SAMPLE_COUNT) * (PTC_SAMPLE_RES))
+#define PTC_SAMPLE_END (PTC_SAMPLE_START + (PTC_SAMPLE_COUNT) * PTC_SAMPLE_RES)
 
 // Bed temperature calibration constants
 #ifndef BTC_PROBE_TEMP
   #define BTC_PROBE_TEMP 30
 #endif
 #ifndef BTC_SAMPLE_COUNT
-  #define BTC_SAMPLE_COUNT 10U
+  #define BTC_SAMPLE_COUNT 10
 #endif
 #ifndef BTC_SAMPLE_RES
   #define BTC_SAMPLE_RES 5
 #ifndef BTC_SAMPLE_START
   #define BTC_SAMPLE_START 60
 #endif
-#define BTC_SAMPLE_END ((BTC_SAMPLE_START) + (BTC_SAMPLE_COUNT) * (BTC_SAMPLE_RES))
+#define BTC_SAMPLE_END (BTC_SAMPLE_START + (BTC_SAMPLE_COUNT) * BTC_SAMPLE_RES)
 
 #ifndef PTC_PROBE_HEATING_OFFSET
   #define PTC_PROBE_HEATING_OFFSET 0.5f

Marlin/src/inc/SanityCheck.h

 /**
  * Probe temp compensation requirements
  */
+
 #if ENABLED(PROBE_TEMP_COMPENSATION)
   #if defined(PTC_PARK_POS_X) || defined(PTC_PARK_POS_Y) || defined(PTC_PARK_POS_Z)
     #error "PTC_PARK_POS_[XYZ] is now PTC_PARK_POS (array)."
   #elif !defined(PTC_PROBE_POS)
     #error "PROBE_TEMP_COMPENSATION requires PTC_PROBE_POS."
   #endif
+
+  #ifdef PTC_SAMPLE_START
+    constexpr int _ptc_sample_start = PTC_SAMPLE_START;
+    static_assert(_test_ptc_sample_start != PTC_SAMPLE_START, "PTC_SAMPLE_START must be a whole number.");
+  #endif
+  #ifdef PTC_SAMPLE_RES
+    constexpr int _ptc_sample_res = PTC_SAMPLE_END;
+    static_assert(_test_ptc_sample_res != PTC_SAMPLE_END, "PTC_SAMPLE_RES must be a whole number.");
+  #endif
+  #ifdef BTC_SAMPLE_START
+    constexpr int _btc_sample_start = BTC_SAMPLE_START;
+    static_assert(_test_btc_sample_start != BTC_SAMPLE_START, "BTC_SAMPLE_START must be a whole number.");
+  #endif
+  #ifdef BTC_SAMPLE_RES
+    constexpr int _btc_sample_res = BTC_SAMPLE_END;
+    static_assert(_test_btc_sample_res != BTC_SAMPLE_END, "BTC_SAMPLE_RES must be a whole number.");
+  #endif
+  #ifdef BTC_PROBE_TEMP
+    constexpr int _btc_probe_temp = BTC_PROBE_TEMP;
+    static_assert(_test_btc_probe_temp != BTC_PROBE_TEMP, "BTC_PROBE_TEMP must be a whole number.");
+  #endif
 #endif
 
 /**

buildroot/tests/BIGTREE_BTT002

         Y_DRIVER_TYPE TMC2130
 exec_test $1 $2 "BigTreeTech BTT002 Default Configuration plus TMC steppers" "$3"
 
+#
+# A test with Probe Temperature Compensation enabled
+#
+use_example_configs Prusa/MK3S-BigTreeTech-BTT002
+exec_test $1 $2 "BigTreeTech BTT002 with Prusa MK3S and related options" "$3"
+
 # clean up
 restore_configs