tests: require float_math where needed

maribu · maribu · commit fc3a860e6384 · 2025-09-18T14:57:42.000+02:00
diff --git a/tests/core/thread_float/Makefile b/tests/core/thread_float/Makefile
@@ -1,5 +1,7 @@
 include ../Makefile.core_common
 
+FEATURES_REQUIRED += float_math
+
 USEMODULE += printf_float
 USEMODULE += ztimer_usec
 
diff --git a/tests/core/thread_stack_alignment/Makefile b/tests/core/thread_stack_alignment/Makefile
@@ -1,5 +1,7 @@
 include ../Makefile.core_common
 
+FEATURES_REQUIRED += float_math
+
 USEMODULE += printf_float
 
 # On ESP* a custom sched_task_exit() is used that does not implement
diff --git a/tests/net/gnrc_sock_ip/Makefile.ci b/tests/net/gnrc_sock_ip/Makefile.ci
@@ -7,12 +7,12 @@ BOARD_INSUFFICIENT_MEMORY := \
     atmega328p-xplained-mini \
     atmega8 \
     msb-430 \
+    msb-430h \
     nucleo-c031c6 \
     nucleo-f031k6 \
     nucleo-f042k6 \
     nucleo-l011k4 \
     nucleo-l031k6 \
-    msb-430h \
     olimex-msp430-h1611 \
     samd10-xmini \
     stk3200 \
diff --git a/tests/sys/cpp11_mutex/Makefile b/tests/sys/cpp11_mutex/Makefile
@@ -1,5 +1,8 @@
 include ../Makefile.sys_common
 
+# std::chrono uses floating point math
+FEATURES_REQUIRED += float_math
+
 USEMODULE += cpp11-compat
 USEMODULE += libc_gettimeofday
 
diff --git a/tests/sys/cpp11_thread/Makefile b/tests/sys/cpp11_thread/Makefile
@@ -1,5 +1,8 @@
 include ../Makefile.sys_common
 
+# std::chrono uses floating point math
+FEATURES_REQUIRED += float_math
+
 USEMODULE += cpp11-compat
 USEMODULE += ztimer64_usec
 USEMODULE += timex
diff --git a/tests/sys/float/Makefile b/tests/sys/float/Makefile
@@ -1,3 +1,5 @@
 include ../Makefile.sys_common
 
+FEATURES_REQUIRED += float_math
+
 include $(RIOTBASE)/Makefile.include
diff --git a/tests/sys/fmt_print/Makefile b/tests/sys/fmt_print/Makefile
@@ -1,5 +1,8 @@
 include ../Makefile.sys_common
 
+# Needed for print_float
+FEATURES_OPTIONAL += float_math
+
 USEMODULE += fmt
 
 include $(RIOTBASE)/Makefile.include
diff --git a/tests/sys/fmt_print/main.c b/tests/sys/fmt_print/main.c
@@ -23,6 +23,7 @@
 #include <stdio.h>
 
 #include "fmt.h"
+#include "modules.h"
 
 int main(void)
 {
@@ -43,7 +44,12 @@ int main(void)
     print_str("\n");
     print_s64_dec(0x8000000000000000);
     print_str("\n");
-    print_float(1.2345, 5);
+    if (IS_USED(MODULE_FLOAT_MATH)) {
+        print_float(1.2345, 5);
+    }
+    else {
+        print_str("print_float() disabled, feature `float_math` not used.");
+    }
     print_str("\n");
     print_bytes_hex("0123456789", 10);
     print_str("\n");
diff --git a/tests/sys/fmt_print/tests/01-run.py b/tests/sys/fmt_print/tests/01-run.py
@@ -14,7 +14,7 @@ def testfunc(child):
     child.expect_exact('123456789ABCDEF0')
     child.expect_exact('18446744073709551615')
     child.expect_exact('-9223372036854775808')
-    child.expect_exact('1.23450')
+    child.expect(r'(1.23450)|(print_float\(\) disabled, feature `float_math` not used.)')
     child.expect_exact('30313233343536373839')
     child.expect_exact('Test successful.')
 
diff --git a/tests/sys/rng/Makefile b/tests/sys/rng/Makefile
@@ -4,6 +4,9 @@ include ../Makefile.sys_common
 MAIN_THREAD_SIZE = THREAD_STACKSIZE_DEFAULT+THREAD_EXTRA_STACKSIZE_PRINTF+256
 CFLAGS += -DTHREAD_STACKSIZE_MAIN=\($(MAIN_THREAD_SIZE)\)
 
+# Using floating point arithmetic, e.g. log2f(), for entropy estimation
+FEATURES_REQUIRED += float_math
+
 # override PRNG if desired (see sys/random for alternatives)
 # USEMODULE += prng_minstd
 
diff --git a/tests/unittests/Makefile b/tests/unittests/Makefile
@@ -8,17 +8,16 @@ ifeq (, $(UNIT_TESTS))
     # the $(dir) Makefile function leaves a trailing slash after the directory
     # name, therefore we use patsubst instead.
     UNIT_TESTS := $(patsubst %/Makefile,%,$(wildcard tests-*/Makefile))
+
+		# Ignore tests needing floats on native
+    ifneq (,$(filter native%,$(BOARD)))
+			UNIT_TESTS := $(filter-out tests-color tests-scanf_float tests-sht1x tests-printf_float,$(UNIT_TESTS))
+    endif
   else
     UNIT_TESTS := $(filter tests-%, $(MAKECMDGOALS))
   endif
 endif
 
-ifeq (llvm,$(TOOLCHAIN))
-  # the floating point exception bug is more likely to trigger when build
-  # with LLVM, so we just disable LLVM on native as a work around
-  TEST_ON_CI_BLACKLIST += native32 native64
-endif
-
 DISABLE_MODULE += auto_init auto_init_%
 
 # boards using stdio via CDC ACM require auto_init to automatically
diff --git a/tests/unittests/tests-analog_util/Makefile.include b/tests/unittests/tests-analog_util/Makefile.include
@@ -1 +1,3 @@
+FEATURES_OPTIONAL += float_math
+
 USEMODULE += analog_util
diff --git a/tests/unittests/tests-phydat/Makefile.include b/tests/unittests/tests-phydat/Makefile.include
@@ -1 +1,3 @@
+FEATURES_OPTIONAL += float_math
+
 USEMODULE += phydat
diff --git a/tests/unittests/tests-printf_float/Makefile.include b/tests/unittests/tests-printf_float/Makefile.include
@@ -1 +1,3 @@
+FEATURES_REQUIRED += float_math
+
 USEMODULE += printf_float
diff --git a/tests/unittests/tests-scanf_float/Makefile.include b/tests/unittests/tests-scanf_float/Makefile.include
@@ -1 +1,3 @@
+FEATURES_REQUIRED += float_math
+
 USEMODULE += scanf_float
diff --git a/tests/unittests/tests-sht1x/Makefile.include b/tests/unittests/tests-sht1x/Makefile.include
@@ -1 +1,3 @@
+FEATURES_REQUIRED += float_math
+
 USEMODULE += sht1x
