diff --git a/tests/truncr_d_i.c b/tests/truncr_d_i.c
new file mode 100644
index 000000000..c703ae8ba
--- /dev/null
+++ b/tests/truncr_d_i.c
@@ -0,0 +1,34 @@
+#include "test.h"
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+  jit_begin(j, arena_base, arena_size);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_DOUBLE };
+  jit_arg_t args[1];
+  const jit_anyreg_t regs[] = { { .fpr=JIT_F0 } };
+
+  jit_receive(j, 1, abi, args);
+  jit_load_args(j, 1, abi, args, regs);
+
+  jit_truncr_d_i(j, JIT_R0, JIT_F0);
+  jit_retr(j, JIT_R0);
+
+  int (*f)(double) = jit_end(j, NULL);
+
+  ASSERT(f(0.0) == 0);
+  ASSERT(f(-0.0) == 0);
+  ASSERT(f(0.5) == 0);
+  ASSERT(f(-0.5) == 0);
+  ASSERT(f(1.5) == 1);
+  ASSERT(f(-1.5) == -1);
+  ASSERT(f(2.5) == 2);
+  ASSERT(f(-2.5) == -2);
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}
diff --git a/tests/truncr_d_l.c b/tests/truncr_d_l.c
new file mode 100644
index 000000000..752a76fa0
--- /dev/null
+++ b/tests/truncr_d_l.c
@@ -0,0 +1,36 @@
+#include "test.h"
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+#if __WORDSIZE > 32
+  jit_begin(j, arena_base, arena_size);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_DOUBLE };
+  jit_arg_t args[1];
+  const jit_anyreg_t regs[] = { { .fpr=JIT_F0 } };
+
+  jit_receive(j, 1, abi, args);
+  jit_load_args(j, 1, abi, args, regs);
+
+  jit_truncr_d_l(j, JIT_R0, JIT_F0);
+  jit_retr(j, JIT_R0);
+
+  int64_t (*f)(double) = jit_end(j, NULL);
+
+  ASSERT(f(0.0) == 0);
+  ASSERT(f(-0.0) == 0);
+  ASSERT(f(0.5) == 0);
+  ASSERT(f(-0.5) == 0);
+  ASSERT(f(1.5) == 1);
+  ASSERT(f(-1.5) == -1);
+  ASSERT(f(2.5) == 2);
+  ASSERT(f(-2.5) == -2);
+#endif
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}
diff --git a/tests/truncr_f_i.c b/tests/truncr_f_i.c
new file mode 100644
index 000000000..32fd71fdf
--- /dev/null
+++ b/tests/truncr_f_i.c
@@ -0,0 +1,34 @@
+#include "test.h"
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+  jit_begin(j, arena_base, arena_size);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_FLOAT };
+  jit_arg_t args[1];
+  const jit_anyreg_t regs[] = { { .fpr=JIT_F0 } };
+
+  jit_receive(j, 1, abi, args);
+  jit_load_args(j, 1, abi, args, regs);
+
+  jit_truncr_f_i(j, JIT_R0, JIT_F0);
+  jit_retr(j, JIT_R0);
+
+  int (*f)(float) = jit_end(j, NULL);
+
+  ASSERT(f(0.0) == 0);
+  ASSERT(f(-0.0) == 0);
+  ASSERT(f(0.5) == 0);
+  ASSERT(f(-0.5) == 0);
+  ASSERT(f(1.5) == 1);
+  ASSERT(f(-1.5) == -1);
+  ASSERT(f(2.5) == 2);
+  ASSERT(f(-2.5) == -2);
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}
diff --git a/tests/truncr_f_l.c b/tests/truncr_f_l.c
new file mode 100644
index 000000000..af3a1168e
--- /dev/null
+++ b/tests/truncr_f_l.c
@@ -0,0 +1,36 @@
+#include "test.h"
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+#if __WORDSIZE > 32
+  jit_begin(j, arena_base, arena_size);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_FLOAT };
+  jit_arg_t args[1];
+  const jit_anyreg_t regs[] = { { .fpr=JIT_F0 } };
+
+  jit_receive(j, 1, abi, args);
+  jit_load_args(j, 1, abi, args, regs);
+
+  jit_truncr_f_l(j, JIT_R0, JIT_F0);
+  jit_retr(j, JIT_R0);
+
+  int64_t (*f)(float) = jit_end(j, NULL);
+
+  ASSERT(f(0.0) == 0);
+  ASSERT(f(-0.0) == 0);
+  ASSERT(f(0.5) == 0);
+  ASSERT(f(-0.5) == 0);
+  ASSERT(f(1.5) == 1);
+  ASSERT(f(-1.5) == -1);
+  ASSERT(f(2.5) == 2);
+  ASSERT(f(-2.5) == -2);
+#endif
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}