diff options
Diffstat (limited to 'libc/dfp/sysdeps/powerpc/powerpc64/power6/fpu/fixunsddsi.S')
| -rw-r--r-- | libc/dfp/sysdeps/powerpc/powerpc64/power6/fpu/fixunsddsi.S | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/libc/dfp/sysdeps/powerpc/powerpc64/power6/fpu/fixunsddsi.S b/libc/dfp/sysdeps/powerpc/powerpc64/power6/fpu/fixunsddsi.S new file mode 100644 index 000000000..47209a79a --- /dev/null +++ b/libc/dfp/sysdeps/powerpc/powerpc64/power6/fpu/fixunsddsi.S @@ -0,0 +1,45 @@ +/* Decimal Floating Point convert 64-bit to unsigned int. P6 PPC64 version. + Copyright (C) 2006 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, + MA 02110-1301 USA */ + +#include <sysdep.h> +#include <math_ldbl_opt.h> + + .machine "power6" +/* unsigned int __fixunsddsi (__decimal64 x) */ +ENTRY (__fixunsddsi) + drintn. 0,fp1,fp1,1 /* Preround to toward zero. */ + dctfix fp0,fp1 /* Convert x to integer. */ + stfd fp0,-8(r1) + ori r1,r1,0 /* Special group ending nop. */ + oris r4,0,0xffff /* 0x00000000ffff0000 */ + ori r4,r4,0xffff /* 0x00000000ffffffff */ + ld r3,-8(r1) +/* The return is an unsigned int, but we have long long, so we need to force + overflow if there are any significant bits in the high word or return + zero if negative. */ + cmpld cr6,r3,r4 + blt cr1,L(negative) + blelr cr6 +L(posoverflow): + mr r3,r4 /* return max unsigned int. */ + blr +L(negative): + li r3,0 /* return 0 for negative floats. */ + blr + END (__fixunsddsi) |