diff options
Diffstat (limited to 'libm/sh/sh4/s_lroundf.S')
| -rw-r--r-- | libm/sh/sh4/s_lroundf.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/libm/sh/sh4/s_lroundf.S b/libm/sh/sh4/s_lroundf.S new file mode 100644 index 000000000..fda3a4b91 --- /dev/null +++ b/libm/sh/sh4/s_lroundf.S @@ -0,0 +1,39 @@ +/* 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) |