[tyndur-devel] [PATCH v2] libm: lrint

[Max Reitz <max@xxxxxxxxxx>]

+ lrint und Konsorten implementiert.

Signed-off-by: Max Reitz <max@xxxxxxxxxx>
---
 src/modules/include/math.h           |    7 ++++
 src/modules/lib/stdlibc/math/lrint.c |   60 ++++++++++++++++++++++++++++++++++
 2 files changed, 67 insertions(+), 0 deletions(-)
 create mode 100644 src/modules/lib/stdlibc/math/lrint.c

diff --git a/src/modules/include/math.h b/src/modules/include/math.h
index 8aa389c..44a4810 100644
--- a/src/modules/include/math.h
+++ b/src/modules/include/math.h
@@ -127,6 +127,13 @@ long double nearbyintl(long double x);
 double      rint(double x);
 double      pow(double x, double y);
 
+long        lrint(double x);
+long        lrintf(float x);
+long        lrintl(long double x);
+long long   llrint(double x);
+long long   llrintf(float x);
+long long   llrintl(long double x);
+
 double      fmod(double x, double y);
 float       fmodf(float x, float y);
 long double fmodl(long double x, long double y);
diff --git a/src/modules/lib/stdlibc/math/lrint.c b/src/modules/lib/stdlibc/math/lrint.c
new file mode 100644
index 0000000..8eeff64
--- /dev/null
+++ b/src/modules/lib/stdlibc/math/lrint.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2011 The tyndur Project. All rights reserved.
+ *
+ * This code is derived from software contributed to the tyndur Project
+ * by Max Reitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <math.h>
+
+long lrint(double x)
+{
+    return (long)nearbyint(x);
+}
+
+long lrintf(float x)
+{
+    return (long)nearbyintf(x);
+}
+
+long lrintl(long double x)
+{
+    return (long)nearbyintl(x);
+}
+
+long long llrint(double x)
+{
+    return (long long)nearbyint(x);
+}
+
+long long llrintf(float x)
+{
+    return (long long)nearbyintf(x);
+}
+
+long long llrintl(long double x)
+{
+    return (long long)nearbyintl(x);
+}
+
-- 
1.7.6.1