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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/parisc/math-emu/fcnvfxt.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/parisc/math-emu/fcnvfxt.c')
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-/*
- * Linux/PA-RISC Project (http://www.parisc-linux.org/)
- *
- * Floating-point emulation code
- * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-/*
- * BEGIN_DESC
- *
- * File:
- * @(#) pa/spmath/fcnvfxt.c $Revision: 1.1 $
- *
- * Purpose:
- * Single Floating-point to Single Fixed-point /w truncated result
- * Single Floating-point to Double Fixed-point /w truncated result
- * Double Floating-point to Single Fixed-point /w truncated result
- * Double Floating-point to Double Fixed-point /w truncated result
- *
- * External Interfaces:
- * dbl_to_dbl_fcnvfxt(srcptr,nullptr,dstptr,status)
- * dbl_to_sgl_fcnvfxt(srcptr,nullptr,dstptr,status)
- * sgl_to_dbl_fcnvfxt(srcptr,nullptr,dstptr,status)
- * sgl_to_sgl_fcnvfxt(srcptr,nullptr,dstptr,status)
- *
- * Internal Interfaces:
- *
- * Theory:
- * <<please update with a overview of the operation of this file>>
- *
- * END_DESC
-*/
-
-
-#include "float.h"
-#include "sgl_float.h"
-#include "dbl_float.h"
-#include "cnv_float.h"
-
-/*
- * Convert single floating-point to single fixed-point format
- * with truncated result
- */
-/*ARGSUSED*/
-int
-sgl_to_sgl_fcnvfxt(
- sgl_floating_point *srcptr,
- unsigned int *nullptr,
- int *dstptr,
- unsigned int *status)
-{
- register unsigned int src, temp;
- register int src_exponent, result;
-
- src = *srcptr;
- src_exponent = Sgl_exponent(src) - SGL_BIAS;
-
- /*
- * Test for overflow
- */
- if (src_exponent > SGL_FX_MAX_EXP) {
- /* check for MININT */
- if ((src_exponent > SGL_FX_MAX_EXP + 1) ||
- Sgl_isnotzero_mantissa(src) || Sgl_iszero_sign(src)) {
- if (Sgl_iszero_sign(src)) result = 0x7fffffff;
- else result = 0x80000000;
-
- if (Is_invalidtrap_enabled()) {
- return(INVALIDEXCEPTION);
- }
- Set_invalidflag();
- *dstptr = result;
- return(NOEXCEPTION);
- }
- }
- /*
- * Generate result
- */
- if (src_exponent >= 0) {
- temp = src;
- Sgl_clear_signexponent_set_hidden(temp);
- Int_from_sgl_mantissa(temp,src_exponent);
- if (Sgl_isone_sign(src)) result = -Sgl_all(temp);
- else result = Sgl_all(temp);
- *dstptr = result;
-
- /* check for inexact */
- if (Sgl_isinexact_to_fix(src,src_exponent)) {
- if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
- else Set_inexactflag();
- }
- }
- else {
- *dstptr = 0;
-
- /* check for inexact */
- if (Sgl_isnotzero_exponentmantissa(src)) {
- if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
- else Set_inexactflag();
- }
- }
- return(NOEXCEPTION);
-}
-
-/*
- * Single Floating-point to Double Fixed-point
- */
-/*ARGSUSED*/
-int
-sgl_to_dbl_fcnvfxt(
- sgl_floating_point *srcptr,
- unsigned int *nullptr,
- dbl_integer *dstptr,
- unsigned int *status)
-{
- register int src_exponent, resultp1;
- register unsigned int src, temp, resultp2;
-
- src = *srcptr;
- src_exponent = Sgl_exponent(src) - SGL_BIAS;
-
- /*
- * Test for overflow
- */
- if (src_exponent > DBL_FX_MAX_EXP) {
- /* check for MININT */
- if ((src_exponent > DBL_FX_MAX_EXP + 1) ||
- Sgl_isnotzero_mantissa(src) || Sgl_iszero_sign(src)) {
- if (Sgl_iszero_sign(src)) {
- resultp1 = 0x7fffffff;
- resultp2 = 0xffffffff;
- }
- else {
- resultp1 = 0x80000000;
- resultp2 = 0;
- }
- if (Is_invalidtrap_enabled()) {
- return(INVALIDEXCEPTION);
- }
- Set_invalidflag();
- Dint_copytoptr(resultp1,resultp2,dstptr);
- return(NOEXCEPTION);
- }
- Dint_set_minint(resultp1,resultp2);
- Dint_copytoptr(resultp1,resultp2,dstptr);
- return(NOEXCEPTION);
- }
- /*
- * Generate result
- */
- if (src_exponent >= 0) {
- temp = src;
- Sgl_clear_signexponent_set_hidden(temp);
- Dint_from_sgl_mantissa(temp,src_exponent,resultp1,resultp2);
- if (Sgl_isone_sign(src)) {
- Dint_setone_sign(resultp1,resultp2);
- }
- Dint_copytoptr(resultp1,resultp2,dstptr);
-
- /* check for inexact */
- if (Sgl_isinexact_to_fix(src,src_exponent)) {
- if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
- else Set_inexactflag();
- }
- }
- else {
- Dint_setzero(resultp1,resultp2);
- Dint_copytoptr(resultp1,resultp2,dstptr);
-
- /* check for inexact */
- if (Sgl_isnotzero_exponentmantissa(src)) {
- if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
- else Set_inexactflag();
- }
- }
- return(NOEXCEPTION);
-}
-
-/*
- * Double Floating-point to Single Fixed-point
- */
-/*ARGSUSED*/
-int
-dbl_to_sgl_fcnvfxt(
- dbl_floating_point *srcptr,
- unsigned int *nullptr,
- int *dstptr,
- unsigned int *status)
-{
- register unsigned int srcp1, srcp2, tempp1, tempp2;
- register int src_exponent, result;
-
- Dbl_copyfromptr(srcptr,srcp1,srcp2);
- src_exponent = Dbl_exponent(srcp1) - DBL_BIAS;
-
- /*
- * Test for overflow
- */
- if (src_exponent > SGL_FX_MAX_EXP) {
- /* check for MININT */
- if (Dbl_isoverflow_to_int(src_exponent,srcp1,srcp2)) {
- if (Dbl_iszero_sign(srcp1)) result = 0x7fffffff;
- else result = 0x80000000;
-
- if (Is_invalidtrap_enabled()) {
- return(INVALIDEXCEPTION);
- }
- Set_invalidflag();
- *dstptr = result;
- return(NOEXCEPTION);
- }
- }
- /*
- * Generate result
- */
- if (src_exponent >= 0) {
- tempp1 = srcp1;
- tempp2 = srcp2;
- Dbl_clear_signexponent_set_hidden(tempp1);
- Int_from_dbl_mantissa(tempp1,tempp2,src_exponent);
- if (Dbl_isone_sign(srcp1) && (src_exponent <= SGL_FX_MAX_EXP))
- result = -Dbl_allp1(tempp1);
- else result = Dbl_allp1(tempp1);
- *dstptr = result;
-
- /* check for inexact */
- if (Dbl_isinexact_to_fix(srcp1,srcp2,src_exponent)) {
- if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
- else Set_inexactflag();
- }
- }
- else {
- *dstptr = 0;
-
- /* check for inexact */
- if (Dbl_isnotzero_exponentmantissa(srcp1,srcp2)) {
- if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
- else Set_inexactflag();
- }
- }
- return(NOEXCEPTION);
-}
-
-/*
- * Double Floating-point to Double Fixed-point
- */
-/*ARGSUSED*/
-int
-dbl_to_dbl_fcnvfxt(
- dbl_floating_point *srcptr,
- unsigned int *nullptr,
- dbl_integer *dstptr,
- unsigned int *status)
-{
- register int src_exponent, resultp1;
- register unsigned int srcp1, srcp2, tempp1, tempp2, resultp2;
-
- Dbl_copyfromptr(srcptr,srcp1,srcp2);
- src_exponent = Dbl_exponent(srcp1) - DBL_BIAS;
-
- /*
- * Test for overflow
- */
- if (src_exponent > DBL_FX_MAX_EXP) {
- /* check for MININT */
- if ((src_exponent > DBL_FX_MAX_EXP + 1) ||
- Dbl_isnotzero_mantissa(srcp1,srcp2) || Dbl_iszero_sign(srcp1)) {
- if (Dbl_iszero_sign(srcp1)) {
- resultp1 = 0x7fffffff;
- resultp2 = 0xffffffff;
- }
- else {
- resultp1 = 0x80000000;
- resultp2 = 0;
- }
- if (Is_invalidtrap_enabled()) {
- return(INVALIDEXCEPTION);
- }
- Set_invalidflag();
- Dint_copytoptr(resultp1,resultp2,dstptr);
- return(NOEXCEPTION);
- }
- }
- /*
- * Generate result
- */
- if (src_exponent >= 0) {
- tempp1 = srcp1;
- tempp2 = srcp2;
- Dbl_clear_signexponent_set_hidden(tempp1);
- Dint_from_dbl_mantissa(tempp1,tempp2,src_exponent,
- resultp1,resultp2);
- if (Dbl_isone_sign(srcp1)) {
- Dint_setone_sign(resultp1,resultp2);
- }
- Dint_copytoptr(resultp1,resultp2,dstptr);
-
- /* check for inexact */
- if (Dbl_isinexact_to_fix(srcp1,srcp2,src_exponent)) {
- if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
- else Set_inexactflag();
- }
- }
- else {
- Dint_setzero(resultp1,resultp2);
- Dint_copytoptr(resultp1,resultp2,dstptr);
-
- /* check for inexact */
- if (Dbl_isnotzero_exponentmantissa(srcp1,srcp2)) {
- if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
- else Set_inexactflag();
- }
- }
- return(NOEXCEPTION);
-}