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Index: lib/libc/tests/gen/Makefile
===================================================================
--- lib/libc/tests/gen/Makefile
+++ lib/libc/tests/gen/Makefile
@@ -35,11 +35,12 @@
CFLAGS+= -DTEST_LONG_DOUBLE
-# Not sure why this isn't defined for all architectures, since most
-# have long double.
+# Define __HAVE_LONG_DOUBLE for architectures whose long double has greater
+# precision than their double.
.if ${MACHINE_CPUARCH} == "aarch64" || \
${MACHINE_CPUARCH} == "amd64" || \
- ${MACHINE_CPUARCH} == "i386"
+ ${MACHINE_CPUARCH} == "i386" || \
+ ${MACHINE_CPUARCH} == "riscv"
CFLAGS+= -D__HAVE_LONG_DOUBLE
.endif
Index: lib/libc/tests/stdlib/Makefile
===================================================================
--- lib/libc/tests/stdlib/Makefile
+++ lib/libc/tests/stdlib/Makefile
@@ -19,11 +19,12 @@
# All architectures on FreeBSD have fenv.h
CFLAGS+= -D__HAVE_FENV
-# Not sure why this isn't defined for all architectures, since most
-# have long double.
+# Define __HAVE_LONG_DOUBLE for architectures whose long double has greater
+# precision than their double.
.if ${MACHINE_CPUARCH} == "aarch64" || \
${MACHINE_CPUARCH} == "amd64" || \
- ${MACHINE_CPUARCH} == "i386"
+ ${MACHINE_CPUARCH} == "i386" || \
+ ${MACHINE_CPUARCH} == "riscv"
CFLAGS+= -D__HAVE_LONG_DOUBLE
.endif
Index: lib/msun/tests/Makefile
===================================================================
--- lib/msun/tests/Makefile
+++ lib/msun/tests/Makefile
@@ -10,11 +10,12 @@
# For isqemu.h
CFLAGS+= -I${TESTSRC:H}/libc/gen
-# Not sure why this isn't defined for all architectures, since most
-# have long double.
+# Define __HAVE_LONG_DOUBLE for architectures whose long double has greater
+# precision than their double.
.if ${MACHINE_CPUARCH} == "aarch64" || \
${MACHINE_CPUARCH} == "amd64" || \
- ${MACHINE_CPUARCH} == "i386"
+ ${MACHINE_CPUARCH} == "i386" || \
+ ${MACHINE_CPUARCH} == "riscv"
CFLAGS+= -D__HAVE_LONG_DOUBLE
.endif

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