1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright (c) 1987 by Sun Microsystems, Inc. 24*0Sstevel@tonic-gate * All rights reserved. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _SYS_FPU_IEEE_H 28*0Sstevel@tonic-gate #define _SYS_FPU_IEEE_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* SunOS-4.0 1.4 */ 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #ifdef __cplusplus 33*0Sstevel@tonic-gate extern "C" { 34*0Sstevel@tonic-gate #endif 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate /* 37*0Sstevel@tonic-gate * Sparc IEEE floating-point support PUBLIC include file. 38*0Sstevel@tonic-gate */ 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate /* PUBLIC TYPES */ 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate /* 43*0Sstevel@tonic-gate * IEEE Arithmetic types... numbered to correspond to fsr fields. 44*0Sstevel@tonic-gate */ 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate /* 47*0Sstevel@tonic-gate * rounding direction 48*0Sstevel@tonic-gate */ 49*0Sstevel@tonic-gate enum fp_rounding_direction { 50*0Sstevel@tonic-gate fp_rd_nearest = 0, 51*0Sstevel@tonic-gate fp_rd_zero = 1, 52*0Sstevel@tonic-gate fp_rd_plus = 2, 53*0Sstevel@tonic-gate fp_rd_minus = 3 54*0Sstevel@tonic-gate }; 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate /* 57*0Sstevel@tonic-gate * extended rounding precision 58*0Sstevel@tonic-gate */ 59*0Sstevel@tonic-gate enum fp_rounding_precision { 60*0Sstevel@tonic-gate fp_rp_extended = 0, 61*0Sstevel@tonic-gate fp_rp_single = 1, 62*0Sstevel@tonic-gate fp_rp_double = 2, 63*0Sstevel@tonic-gate fp_rp_3 = 3 64*0Sstevel@tonic-gate }; 65*0Sstevel@tonic-gate 66*0Sstevel@tonic-gate /* 67*0Sstevel@tonic-gate * exceptions according to cexc bit number 68*0Sstevel@tonic-gate */ 69*0Sstevel@tonic-gate enum fp_exception_type { 70*0Sstevel@tonic-gate fp_inexact = 0, 71*0Sstevel@tonic-gate fp_divide = 1, 72*0Sstevel@tonic-gate fp_underflow = 2, 73*0Sstevel@tonic-gate fp_overflow = 3, 74*0Sstevel@tonic-gate fp_invalid = 4 75*0Sstevel@tonic-gate }; 76*0Sstevel@tonic-gate 77*0Sstevel@tonic-gate /* 78*0Sstevel@tonic-gate * floating-point classes according to fclass 79*0Sstevel@tonic-gate */ 80*0Sstevel@tonic-gate enum fp_class_type { 81*0Sstevel@tonic-gate fp_zero = 0, 82*0Sstevel@tonic-gate fp_normal = 1, /* Includes subnormal. */ 83*0Sstevel@tonic-gate fp_infinity = 2, 84*0Sstevel@tonic-gate fp_nan = 3, /* Includes quiet and signaling NaN. */ 85*0Sstevel@tonic-gate }; 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate 88*0Sstevel@tonic-gate /* PUBLIC GLOBAL VARIABLES */ 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate unsigned fp_accrued_exceptions; /* Sticky accumulated exceptions. */ 91*0Sstevel@tonic-gate 92*0Sstevel@tonic-gate 93*0Sstevel@tonic-gate /* PUBLIC FUNCTIONS */ 94*0Sstevel@tonic-gate 95*0Sstevel@tonic-gate #ifdef __STDC__ 96*0Sstevel@tonic-gate 97*0Sstevel@tonic-gate extern enum 98*0Sstevel@tonic-gate fp_rounding_direction swap_rounding_direction(enum fp_rounding_direction); 99*0Sstevel@tonic-gate 100*0Sstevel@tonic-gate /* Change rounding mode; return previous. */ 101*0Sstevel@tonic-gate 102*0Sstevel@tonic-gate extern int swap_accrued_exceptions(int); 103*0Sstevel@tonic-gate 104*0Sstevel@tonic-gate /* Change accrued exceptions; return previous. */ 105*0Sstevel@tonic-gate 106*0Sstevel@tonic-gate #else /* __STDC__ */ 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate extern enum fp_rounding_direction swap_rounding_direction(/* rd */); 109*0Sstevel@tonic-gate /* extern enum fp_rounding_direction rd; */ 110*0Sstevel@tonic-gate 111*0Sstevel@tonic-gate /* Change rounding mode; return previous. */ 112*0Sstevel@tonic-gate 113*0Sstevel@tonic-gate extern int swap_accrued_exceptions(/* x */); 114*0Sstevel@tonic-gate /* int x; */ 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate /* Change accrued exceptions; return previous. */ 117*0Sstevel@tonic-gate 118*0Sstevel@tonic-gate #endif /* ! __STDC__ */ 119*0Sstevel@tonic-gate 120*0Sstevel@tonic-gate #ifdef __cplusplus 121*0Sstevel@tonic-gate } 122*0Sstevel@tonic-gate #endif 123*0Sstevel@tonic-gate 124*0Sstevel@tonic-gate #endif /* _SYS_FPU_IEEE_H */ 125