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Date: Fri, 28 Jul 2023 14:19:55 +0800
From: zhangfei <zhang_fei_0403@....com>
To: musl@...ts.openwall.com
Cc: dalias@...c.org,
zhangfei <zhangfei@...iscas.ac.cn>
Subject: [PATCH 1/1] RISC-V: Add some mathematical functions to riscv64
From: zhangfei <zhangfei@...iscas.ac.cn>
Add a series of function implementations such as lrint and lround.
Signed-off-by: Zhang Fei<zhangfei@...iscas.ac.cn>
---
src/math/riscv64/llrint.c | 16 ++++++++++++++++
src/math/riscv64/llrintf.c | 16 ++++++++++++++++
src/math/riscv64/llround.c | 16 ++++++++++++++++
src/math/riscv64/llroundf.c | 16 ++++++++++++++++
src/math/riscv64/lrint.c | 16 ++++++++++++++++
src/math/riscv64/lrintf.c | 16 ++++++++++++++++
src/math/riscv64/lround.c | 16 ++++++++++++++++
src/math/riscv64/lroundf.c | 16 ++++++++++++++++
8 files changed, 128 insertions(+)
create mode 100644 src/math/riscv64/llrint.c
create mode 100644 src/math/riscv64/llrintf.c
create mode 100644 src/math/riscv64/llround.c
create mode 100644 src/math/riscv64/llroundf.c
create mode 100644 src/math/riscv64/lrint.c
create mode 100644 src/math/riscv64/lrintf.c
create mode 100644 src/math/riscv64/lround.c
create mode 100644 src/math/riscv64/lroundf.c
diff --git a/src/math/riscv64/llrint.c b/src/math/riscv64/llrint.c
new file mode 100644
index 0000000..2b5ea25
--- /dev/null
+++ b/src/math/riscv64/llrint.c
@@ -0,0 +1,16 @@
+#include <math.h>
+
+#if __riscv_flen >= 64
+
+long long llrint (double x)
+{
+ long long res;
+ __asm__ ("fcvt.l.d %0, %1" : "=r" (res) : "f" (x));
+ return res;
+}
+
+#else
+
+#include "../llrint.c"
+
+#endif
diff --git a/src/math/riscv64/llrintf.c b/src/math/riscv64/llrintf.c
new file mode 100644
index 0000000..d69566b
--- /dev/null
+++ b/src/math/riscv64/llrintf.c
@@ -0,0 +1,16 @@
+#include <math.h>
+
+#if __riscv_flen >= 32
+
+long long llrintf (float x)
+{
+ long long res;
+ __asm__ ("fcvt.l.s %0, %1" : "=r" (res) : "f" (x));
+ return res;
+}
+
+#else
+
+#include "../llrintf.c"
+
+#endif
diff --git a/src/math/riscv64/llround.c b/src/math/riscv64/llround.c
new file mode 100644
index 0000000..d6d2619
--- /dev/null
+++ b/src/math/riscv64/llround.c
@@ -0,0 +1,16 @@
+#include <math.h>
+
+#if __riscv_flen >= 64
+
+long long llround (double x)
+{
+ long long res;
+ __asm__ ("fcvt.l.d %0, %1, rmm" : "=r" (res) : "f" (x));
+ return res;
+}
+
+#else
+
+#include "../llround.c"
+
+#endif
diff --git a/src/math/riscv64/llroundf.c b/src/math/riscv64/llroundf.c
new file mode 100644
index 0000000..72b343a
--- /dev/null
+++ b/src/math/riscv64/llroundf.c
@@ -0,0 +1,16 @@
+#include <math.h>
+
+#if __riscv_flen >= 32
+
+long long llroundf (float x)
+{
+ long long res;
+ __asm__ ("fcvt.l.s %0, %1, rmm" : "=r" (res) : "f" (x));
+ return res;
+}
+
+#else
+
+#include "../llroundf.c"
+
+#endif
diff --git a/src/math/riscv64/lrint.c b/src/math/riscv64/lrint.c
new file mode 100644
index 0000000..c62e306
--- /dev/null
+++ b/src/math/riscv64/lrint.c
@@ -0,0 +1,16 @@
+#include <math.h>
+
+#if __riscv_flen >= 64
+
+long lrint (double x)
+{
+ long res;
+ __asm__ ("fcvt.l.d %0, %1" : "=r" (res) : "f" (x));
+ return res;
+}
+
+#else
+
+#include "../lrint.c"
+
+#endif
diff --git a/src/math/riscv64/lrintf.c b/src/math/riscv64/lrintf.c
new file mode 100644
index 0000000..6f3b120
--- /dev/null
+++ b/src/math/riscv64/lrintf.c
@@ -0,0 +1,16 @@
+#include <math.h>
+
+#if __riscv_flen >= 32
+
+long lrintf (float x)
+{
+ long res;
+ __asm__ ("fcvt.l.s %0, %1" : "=r" (res) : "f" (x));
+ return res;
+}
+
+#else
+
+#include "../lrintf.c"
+
+#endif
diff --git a/src/math/riscv64/lround.c b/src/math/riscv64/lround.c
new file mode 100644
index 0000000..7d061e8
--- /dev/null
+++ b/src/math/riscv64/lround.c
@@ -0,0 +1,16 @@
+#include <math.h>
+
+#if __riscv_flen >= 64
+
+long lround (double x)
+{
+ long res;
+ __asm__ ("fcvt.l.d %0, %1, rmm" : "=r" (res) : "f" (x));
+ return res;
+}
+
+#else
+
+#include "../lround.c"
+
+#endif
diff --git a/src/math/riscv64/lroundf.c b/src/math/riscv64/lroundf.c
new file mode 100644
index 0000000..34d978b
--- /dev/null
+++ b/src/math/riscv64/lroundf.c
@@ -0,0 +1,16 @@
+#include <math.h>
+
+#if __riscv_flen >= 32
+
+long lroundf (float x)
+{
+ long res;
+ __asm__ ("fcvt.l.s %0, %1, rmm" : "=r" (res) : "f" (x));
+ return res;
+}
+
+#else
+
+#include "../lroundf.c"
+
+#endif
--
2.34.1
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