From 51f4f8c512d682fe0c1a7a891909e75f416f20f6 Mon Sep 17 00:00:00 2001
From: Alexander Monakov <amonakov@ispras.ru>
Date: Tue, 14 Jan 2020 14:53:38 +0300
Subject: [PATCH] math: move x87-family rint functions to C with inline asm

---
 src/math/i386/rint.c    | 7 +++++++
 src/math/i386/rint.s    | 6 ------
 src/math/i386/rintf.c   | 7 +++++++
 src/math/i386/rintf.s   | 6 ------
 src/math/i386/rintl.c   | 7 +++++++
 src/math/i386/rintl.s   | 6 ------
 src/math/x86_64/rintl.c | 7 +++++++
 src/math/x86_64/rintl.s | 6 ------
 8 files changed, 28 insertions(+), 24 deletions(-)
 create mode 100644 src/math/i386/rint.c
 delete mode 100644 src/math/i386/rint.s
 create mode 100644 src/math/i386/rintf.c
 delete mode 100644 src/math/i386/rintf.s
 create mode 100644 src/math/i386/rintl.c
 delete mode 100644 src/math/i386/rintl.s
 create mode 100644 src/math/x86_64/rintl.c
 delete mode 100644 src/math/x86_64/rintl.s

diff --git a/src/math/i386/rint.c b/src/math/i386/rint.c
new file mode 100644
index 00000000..a5276a60
--- /dev/null
+++ b/src/math/i386/rint.c
@@ -0,0 +1,7 @@
+#include <math.h>
+
+double rint(double x)
+{
+	__asm__ ("frndint" : "+t"(x));
+	return x;
+}
diff --git a/src/math/i386/rint.s b/src/math/i386/rint.s
deleted file mode 100644
index bb99a11c..00000000
--- a/src/math/i386/rint.s
+++ /dev/null
@@ -1,6 +0,0 @@
-.global rint
-.type rint,@function
-rint:
-	fldl 4(%esp)
-	frndint
-	ret
diff --git a/src/math/i386/rintf.c b/src/math/i386/rintf.c
new file mode 100644
index 00000000..bb4121a4
--- /dev/null
+++ b/src/math/i386/rintf.c
@@ -0,0 +1,7 @@
+#include <math.h>
+
+float rintf(float x)
+{
+	__asm__ ("frndint" : "+t"(x));
+	return x;
+}
diff --git a/src/math/i386/rintf.s b/src/math/i386/rintf.s
deleted file mode 100644
index bce4c5a6..00000000
--- a/src/math/i386/rintf.s
+++ /dev/null
@@ -1,6 +0,0 @@
-.global rintf
-.type rintf,@function
-rintf:
-	flds 4(%esp)
-	frndint
-	ret
diff --git a/src/math/i386/rintl.c b/src/math/i386/rintl.c
new file mode 100644
index 00000000..e1a92077
--- /dev/null
+++ b/src/math/i386/rintl.c
@@ -0,0 +1,7 @@
+#include <math.h>
+
+long double rintl(long double x)
+{
+	__asm__ ("frndint" : "+t"(x));
+	return x;
+}
diff --git a/src/math/i386/rintl.s b/src/math/i386/rintl.s
deleted file mode 100644
index cd2bf9a9..00000000
--- a/src/math/i386/rintl.s
+++ /dev/null
@@ -1,6 +0,0 @@
-.global rintl
-.type rintl,@function
-rintl:
-	fldt 4(%esp)
-	frndint
-	ret
diff --git a/src/math/x86_64/rintl.c b/src/math/x86_64/rintl.c
new file mode 100644
index 00000000..e1a92077
--- /dev/null
+++ b/src/math/x86_64/rintl.c
@@ -0,0 +1,7 @@
+#include <math.h>
+
+long double rintl(long double x)
+{
+	__asm__ ("frndint" : "+t"(x));
+	return x;
+}
diff --git a/src/math/x86_64/rintl.s b/src/math/x86_64/rintl.s
deleted file mode 100644
index 64e663cd..00000000
--- a/src/math/x86_64/rintl.s
+++ /dev/null
@@ -1,6 +0,0 @@
-.global rintl
-.type rintl,@function
-rintl:
-	fldt 8(%rsp)
-	frndint
-	ret
-- 
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