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/* EINA - EFL data type library
* Copyright (C) 2007-2008 Jorge Luis Zapata Muga
* Copyright (C) 2009 Cedric BAIL
*
* This 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.
*
* This 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 this library;
* if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef EINA_INLINE_F8P24_X_
#define EINA_INLINE_F8P24_X_
static inline Eina_F8p24
eina_f8p24_add(Eina_F8p24 a, Eina_F8p24 b)
{
return a + b;
}
static inline Eina_F8p24
eina_f8p24_sub(Eina_F8p24 a, Eina_F8p24 b)
{
return a - b;
}
static inline Eina_F8p24
eina_f8p24_mul(Eina_F8p24 a, Eina_F8p24 b)
{
return (Eina_F8p24)(((int64_t) a * (int64_t) b) >> 24);
}
static inline Eina_F8p24
eina_f8p24_scale(Eina_F8p24 a, int b)
{
return a * b;
}
static inline Eina_F8p24
eina_f8p24_div(Eina_F8p24 a, Eina_F8p24 b)
{
return (Eina_F8p24) ((((int64_t) a) << 24) / (int64_t) b);
}
static inline Eina_F8p24
eina_f8p24_sqrt(Eina_F8p24 a)
{
unsigned int root, remHi, remLo, testDiv, count;
root = 0; /* Clear root */
remHi = 0; /* Clear high part of partial remainder */
remLo = a; /* Get argument into low part of partial remainder */
count = (23 + (24 >> 1)); /* Load loop counter */
do {
remHi = (remHi << 2) | (remLo >> 30);
remLo <<= 2; /* get 2 bits of arg */
root <<= 1; /* Get ready for the next bit in the root */
testDiv = (root << 1) + 1; /* Test radical */
if (remHi >= testDiv)
{
remHi -= testDiv;
root++;
}
} while (count-- != 0);
return (root);
}
static inline unsigned int
eina_f8p24_fracc_get(Eina_F8p24 v)
{
return (v & 0xffffff);
}
#endif
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