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authorCarmelo Amoroso <carmelo.amoroso@st.com>2011-01-03 14:37:49 +0100
committerCarmelo Amoroso <carmelo.amoroso@st.com>2011-01-03 14:44:33 +0100
commit8100a075b7dd7471562decb1860571a335d68b0d (patch)
tree331eebca0cbafd27aa691da4bc5fa281abb61d3d /libm/sh/sh4/s_lroundf.S
parente018b8ba1a0110120429de34366459af0771abe2 (diff)
parent4ac7ad3543dd6d7780e71af80fa5c45414451719 (diff)
Merge commit 'origin/master' into prelink
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Diffstat (limited to 'libm/sh/sh4/s_lroundf.S')
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1 files changed, 39 insertions, 0 deletions
diff --git a/libm/sh/sh4/s_lroundf.S b/libm/sh/sh4/s_lroundf.S
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+/* Round argument toward 0. SH4 version.
+ * According to ISO/IEC 9899:1999. This version doesn't handle range error.
+ * If arg is not finite or if the result cannot be represented into a long,
+ * return an unspecified value. No exception raised.
+ *
+ * Copyright (C) 2010 STMicroelectronics Ltd.
+ *
+ * Author: Christian Bruel <christian.bruel@st.com>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sysdep.h>
+
+ENTRY(lroundf)
+ mov #0,r0
+ sts fpscr,r3
+ lds r0,fpscr
+ flds fr5,fpul
+ mov.l LOCAL(mask),r1
+ sts fpul,r2
+ and r2,r1
+ mov.l LOCAL(midway),r2
+ or r1,r2
+ lds r2,fpul
+ fsts fpul,fr2
+ fadd fr2,fr5
+ ftrc fr5,fpul
+ sts fpul,r0
+ rts
+ lds r3,fpscr
+
+ .align 2
+LOCAL(mask):
+ .long 0x80000000
+LOCAL(midway):
+ .long 1056964608
+
+END(lroundf)