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softfp.c
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softfp.c
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/*
* SoftFP Library
*
* Copyright (c) 2016 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <string.h>
#include "cutils.h"
#include "softfp.h"
static inline int clz32(uint32_t a)
{
int r;
if (a == 0) {
r = 32;
} else {
r = __builtin_clz(a);
}
return r;
}
static inline int clz64(uint64_t a)
{
int r;
if (a == 0) {
r = 64;
} else
{
r = __builtin_clzll(a);
}
return r;
}
#ifdef HAVE_INT128
static inline int clz128(uint128_t a)
{
int r;
if (a == 0) {
r = 128;
} else
{
uint64_t ah, al;
ah = a >> 64;
al = a;
if (ah != 0)
r = __builtin_clzll(ah);
else
r = __builtin_clzll(al) + 64;
}
return r;
}
#endif
#define F_SIZE 32
#include "softfp_template.h"
#define F_SIZE 64
#include "softfp_template.h"
#ifdef HAVE_INT128
#define F_SIZE 128
#include "softfp_template.h"
#endif