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authorXiaolin Tang <tangxiaolin@loongson.cn>2022-11-23 11:45:01 +0800
committercaiyinyu <caiyinyu@loongson.cn>2022-11-29 16:00:28 +0800
commit13c549f49705d10105b16706124077e07068a936 (patch)
tree3d160e9a74aa6d1039386aabec43465768ca1699
parent2e2485ce05bce85bf092ba0752854afa14b92dad (diff)
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LoongArch: Use __builtin_logb{,f} with GCC >= 13
GCC 13 compiles these built-ins instead of generic
implementation for function logb.

Link: https://gcc.gnu.org/r13-3922
Co-Authored-By: Xi Ruoyao <xry111@xry111.site>
-rw-r--r--sysdeps/loongarch/fpu/math-use-builtins-logb.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/sysdeps/loongarch/fpu/math-use-builtins-logb.h b/sysdeps/loongarch/fpu/math-use-builtins-logb.h
new file mode 100644
index 0000000000..b1c3f30dc4
--- /dev/null
+++ b/sysdeps/loongarch/fpu/math-use-builtins-logb.h
@@ -0,0 +1,10 @@
+#if __GNUC_PREREQ (13, 0)
+# define USE_LOGB_BUILTIN 1
+# define USE_LOGBF_BUILTIN 1
+#else
+# define USE_LOGB_BUILTIN 0
+# define USE_LOGBF_BUILTIN 0
+#endif
+
+#define USE_LOGBL_BUILTIN 0
+#define USE_LOGBF128_BUILTIN 0