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From: zhangfei <zhang_fei_0403@163.com>
To: musl@lists.openwall.com
Cc: dalias@libc.org, zhangfei <zhangfei@nj.iscas.ac.cn>
Subject: [musl] [PATCH 1/1] RISC-V: Add some mathematical functions to riscv64
Date: Fri, 28 Jul 2023 14:19:55 +0800	[thread overview]
Message-ID: <20230728061955.20156-2-zhang_fei_0403@163.com> (raw)
In-Reply-To: <20230728061955.20156-1-zhang_fei_0403@163.com>

From: zhangfei <zhangfei@nj.iscas.ac.cn>

Add a series of function implementations such as lrint and lround.

Signed-off-by: Zhang Fei<zhangfei@nj.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


  reply	other threads:[~2023-07-28  6:21 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-28  6:19 [musl] [PATCH 0/1] RISC-V: Add math functions zhangfei
2023-07-28  6:19 ` zhangfei [this message]
2023-07-28 16:46   ` [musl] [PATCH 1/1] RISC-V: Add some mathematical functions to riscv64 Khem Raj
2023-07-28 18:50   ` Rich Felker

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