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Message-Id: <20240613083042.562213-1-mzh@mzh.io>
Date: Thu, 13 Jun 2024 16:30:42 +0800
From: Meng Zhuo <mzh@....io>
To: musl@...ts.openwall.com
Subject: [PATCH v2] math: add riscv64 llround[f]/lround[f]
---
src/math/riscv64/llround.c | 16 ++++++++++++++++
src/math/riscv64/llroundf.c | 16 ++++++++++++++++
src/math/riscv64/lround.c | 16 ++++++++++++++++
src/math/riscv64/lroundf.c | 16 ++++++++++++++++
4 files changed, 64 insertions(+)
create mode 100644 src/math/riscv64/llround.c
create mode 100644 src/math/riscv64/llroundf.c
create mode 100644 src/math/riscv64/lround.c
create mode 100644 src/math/riscv64/lroundf.c
---
v1 -> v2:
* adds lround[f]
---
diff --git a/src/math/riscv64/llround.c b/src/math/riscv64/llround.c
new file mode 100644
index 00000000..fa646b5a
--- /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 n;
+ __asm__ ("fcvt.l.d %0, %1, rmm" : "=r"(n) : "f"(x));
+ return n;
+}
+
+#else
+
+#include "../llround.c"
+
+#endif
diff --git a/src/math/riscv64/llroundf.c b/src/math/riscv64/llroundf.c
new file mode 100644
index 00000000..db2d58df
--- /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 n;
+ __asm__ ("fcvt.l.s %0, %1, rmm" : "=r"(n) : "f"(x));
+ return n;
+}
+
+#else
+
+#include "../llroundf.c"
+
+#endif
diff --git a/src/math/riscv64/lround.c b/src/math/riscv64/lround.c
new file mode 100644
index 00000000..4535d4b6
--- /dev/null
+++ b/src/math/riscv64/lround.c
@@ -0,0 +1,16 @@
+#include <math.h>
+
+#if __riscv_flen >= 64
+
+long lround(double x)
+{
+ long n;
+ __asm__ ("fcvt.w.d %0, %1, rmm" : "=r"(n) : "f"(x));
+ return n;
+}
+
+#else
+
+#include "../lround.c"
+
+#endif
diff --git a/src/math/riscv64/lroundf.c b/src/math/riscv64/lroundf.c
new file mode 100644
index 00000000..9779c1cd
--- /dev/null
+++ b/src/math/riscv64/lroundf.c
@@ -0,0 +1,16 @@
+#include <math.h>
+
+#if __riscv_flen >= 32
+
+long lroundf(float x)
+{
+ long n;
+ __asm__ ("fcvt.w.s %0, %1, rmm" : "=r"(n) : "f"(x));
+ return n;
+}
+
+#else
+
+#include "../lroundf.c"
+
+#endif
--
2.39.2
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