diff options
Diffstat (limited to 'usr/src/lib/libm/common/m9x/feround.c')
-rw-r--r-- | usr/src/lib/libm/common/m9x/feround.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/usr/src/lib/libm/common/m9x/feround.c b/usr/src/lib/libm/common/m9x/feround.c new file mode 100644 index 0000000000..5d56ae0c89 --- /dev/null +++ b/usr/src/lib/libm/common/m9x/feround.c @@ -0,0 +1,83 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ + +/* + * Copyright 2011 Nexenta Systems, Inc. All rights reserved. + */ +/* + * Copyright 2006 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#pragma weak fegetround = __fegetround +#pragma weak fesetround = __fesetround + +#pragma weak fegetround96 = __fegetround +#pragma weak fesetround96 = __fesetround96 + +#include "fenv_synonyms.h" +#include <fenv.h> +#include <ucontext.h> +#include <thread.h> +#include "fex_handler.h" +#include "fenv_inlines.h" + +#if defined(__i386) && !defined(__amd64) +#include <float.h> +#endif + +int fegetround(void) +{ + unsigned long fsr; + + __fenv_getfsr(&fsr); + return (int)__fenv_get_rd(fsr); +} + +int fesetround(int r) +{ + unsigned long fsr; + + if (r & ~3) + return -1; + __fenv_getfsr(&fsr); + __fenv_set_rd(fsr, r); + __fenv_setfsr(&fsr); +#if defined(__i386) && !defined(__amd64) + FLT_ROUNDS = (0x2D >> (r << 1)) & 3; /* 0->1, 1->3, 2->2, 3->0 */ +#endif + return 0; +} + +int fesetround96(int r) +{ + unsigned long fsr; + + if (r & ~3) + return 0; + __fenv_getfsr(&fsr); + __fenv_set_rd(fsr, r); + __fenv_setfsr(&fsr); +#if defined(__i386) && !defined(__amd64) + FLT_ROUNDS = (0x2D >> (r << 1)) & 3; /* 0->1, 1->3, 2->2, 3->0 */ +#endif + return 1; +} |