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|
/* $Id: testmath.c $ */
/** @file
* Testcase for the no-crt math stuff.
*/
/*
* Copyright (C) 2006-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#ifndef MATHTEST_STANDALONE
# include <iprt/assert.h>
# include <math.h>
# undef printf
# define printf RTAssertMsg2Weak
#else
# include <stdio.h>
# include <math.h>
#endif
/* gcc starting with version 4.3 uses the MPFR library which results in more accurate results. gcc-4.3.1 seems to emit the less accurate result. So just allow both results. */
#define SIN180a -0.8011526357338304777463731115L
#define SIN180b -0.801152635733830477871L
static void bitch(const char *pszWhat, const long double *plrdResult, const long double *plrdExpected)
{
const unsigned char *pach1 = (const unsigned char *)plrdResult;
const unsigned char *pach2 = (const unsigned char *)plrdExpected;
#ifndef MATHTEST_STANDALONE
printf("error: %s - %d instead of %d\n", pszWhat, (int)(*plrdResult * 100000), (int)(*plrdExpected * 100000));
#else
printf("error: %s - %.25f instead of %.25f\n", pszWhat, (double)*plrdResult, (double)*plrdExpected);
#endif
printf(" %02x%02x%02x%02x-%02x%02x%02x%02x-%02x%02x\n", pach1[0], pach1[1], pach1[2], pach1[3], pach1[4], pach1[5], pach1[6], pach1[7], pach1[8], pach1[9]);
printf(" %02x%02x%02x%02x-%02x%02x%02x%02x-%02x%02x\n", pach2[0], pach2[1], pach2[2], pach2[3], pach2[4], pach2[5], pach2[6], pach2[7], pach2[8], pach2[9]);
}
static void bitchll(const char *pszWhat, long long llResult, long long llExpected)
{
#if defined(__MINGW32__) && !defined(Assert)
printf("error: %s - %I64d instead of %I64d\n", pszWhat, llResult, llExpected);
#else
printf("error: %s - %lld instead of %lld\n", pszWhat, llResult, llExpected);
#endif
}
static void bitchl(const char *pszWhat, long lResult, long lExpected)
{
printf("error: %s - %ld instead of %ld\n", pszWhat, lResult, lExpected);
}
extern int testsin(void)
{
return sinl(180.0L) == SIN180a || sinl(180.0L) == SIN180b;
}
extern int testremainder(void)
{
static double s_rd1 = 2.5;
static double s_rd2 = 2.0;
static double s_rd3 = 0.5;
return remainder(s_rd1, s_rd2) == s_rd3;
}
static __inline__ void set_cw(unsigned cw)
{
__asm __volatile("fldcw %0" : : "m" (cw));
}
static __inline__ unsigned get_cw(void)
{
unsigned cw;
__asm __volatile("fstcw %0" : "=m" (cw));
return cw & 0xffff;
}
static long double check_lrd(const long double lrd, const unsigned long long ull, const unsigned short us)
{
static volatile long double lrd2;
lrd2 = lrd;
if ( *(unsigned long long *)&lrd2 != ull
|| ((unsigned short *)&lrd2)[4] != us)
{
#if defined(__MINGW32__) && !defined(Assert)
printf("%I64x:%04x instead of %I64x:%04x\n", *(unsigned long long *)&lrd2, ((unsigned short *)&lrd2)[4], ull, us);
#else
printf("%llx:%04x instead of %llx:%04x\n", *(unsigned long long *)&lrd2, ((unsigned short *)&lrd2)[4], ull, us);
#endif
__asm__("int $3\n");
}
return lrd;
}
static long double make_lrd(const unsigned long long ull, const unsigned short us)
{
union
{
long double lrd;
struct
{
unsigned long long ull;
unsigned short us;
} i;
} u;
u.i.ull = ull;
u.i.us = us;
return u.lrd;
}
static long double check_lrd_cw(const long double lrd, const unsigned long long ull, const unsigned short us, const unsigned cw)
{
set_cw(cw);
if (cw != get_cw())
{
printf("get_cw() -> %#x expected %#x\n", get_cw(), cw);
__asm__("int $3\n");
}
return check_lrd(lrd, ull, us);
}
static long double make_lrd_cw(unsigned long long ull, unsigned short us, unsigned cw)
{
set_cw(cw);
return check_lrd_cw(make_lrd(ull, us), ull, us, cw);
}
extern int testmath(void)
{
unsigned cErrors = 0;
long double lrdResult;
long double lrdExpect;
long double lrd;
#define CHECK(operation, expect) \
do { \
lrdExpect = expect; \
lrdResult = operation; \
if (lrdResult != lrdExpect) \
{ \
bitch(#operation, &lrdResult, &lrdExpect); \
cErrors++; \
} \
} while (0)
long long llResult;
long long llExpect;
#define CHECKLL(operation, expect) \
do { \
llExpect = expect; \
llResult = operation; \
if (llResult != llExpect) \
{ \
bitchll(#operation, llResult, llExpect); \
cErrors++; \
} \
} while (0)
long lResult;
long lExpect;
#define CHECKL(operation, expect) \
do { \
lExpect = expect; \
lResult = operation; \
if (lResult != lExpect) \
{ \
bitchl(#operation, lResult, lExpect); \
cErrors++; \
} \
} while (0)
CHECK(atan2l(1.0L, 1.0L), 0.785398163397448309603L);
CHECK(atan2l(2.3L, 3.3L), 0.608689307327411694890L);
CHECK(ceill(1.9L), 2.0L);
CHECK(ceill(4.5L), 5.0L);
CHECK(ceill(3.3L), 4.0L);
CHECK(ceill(6.1L), 7.0L);
CHECK(floorl(1.9L), 1.0L);
CHECK(floorl(4.5L), 4.0L);
CHECK(floorl(7.3L), 7.0L);
CHECK(floorl(1234.1L), 1234.0L);
CHECK(floor(1233.1), 1233.0);
CHECK(floor(1239.98989898), 1239.0);
CHECK(floorf(9999.999), 9999.0);
CHECK(ldexpl(1.0L, 1), 2.0L);
CHECK(ldexpl(1.0L, 10), 1024.0L);
CHECK(ldexpl(2.25L, 10), 2304.0L);
CHECKLL(llrintl(1.0L), 1);
CHECKLL(llrintl(1.3L), 1);
CHECKLL(llrintl(1.5L), 2);
CHECKLL(llrintl(1.9L), 2);
CHECKLL(llrintf(123.34), 123);
CHECKLL(llrintf(-123.50), -124);
CHECKLL(llrint(42.42), 42);
CHECKLL(llrint(-2147483648.12343), -2147483648LL);
#if !defined(RT_ARCH_AMD64)
CHECKLL(lrint(-21474836499.12343), -2147483648LL);
CHECKLL(lrint(-2147483649932412.12343), -2147483648LL);
#else
CHECKLL(lrint(-21474836499.12343), -21474836499L);
CHECKLL(lrint(-2147483649932412.12343), -2147483649932412L);
#endif
// __asm__("int $3");
CHECKL(lrintl(make_lrd_cw(000000000000000000ULL,000000,0x027f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x3ffe,0x027f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x3ffe,0x027f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x3ffe,0x067f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x3ffe,0x067f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x3ffe,0x0a7f)), 1L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x3ffe,0x0a7f)), 1L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x3ffe,0x0e7f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x3ffe,0x0e7f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0xbffe,0x027f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0xbffe,0x027f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0xbffe,0x067f)), -1L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0xbffe,0x067f)), -1L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0xbffe,0x0a7f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0xbffe,0x0a7f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0xbffe,0x0e7f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0xbffe,0x0e7f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x9249249249249000ULL,0x3ffc,0x027f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x9249249249249000ULL,0x3ffc,0x027f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x9249249249249000ULL,0x3ffc,0x067f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x9249249249249000ULL,0x3ffc,0x067f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x9249249249249000ULL,0x3ffc,0x0a7f)), 1L);
CHECKL(lrintl(make_lrd_cw(0x9249249249249000ULL,0x3ffc,0x0a7f)), 1L);
CHECKL(lrintl(make_lrd_cw(0x9249249249249000ULL,0x3ffc,0x0e7f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x9249249249249000ULL,0x3ffc,0x0e7f)), 0L);
CHECKL(lrintl(make_lrd_cw(0xe38e38e38e38e000ULL,0xbffb,0x027f)), 0L);
CHECKL(lrintl(make_lrd_cw(0xe38e38e38e38e000ULL,0xbffb,0x027f)), 0L);
CHECKL(lrintl(make_lrd_cw(0xe38e38e38e38e000ULL,0xbffb,0x067f)), -1L);
CHECKL(lrintl(make_lrd_cw(0xe38e38e38e38e000ULL,0xbffb,0x067f)), -1L);
CHECKL(lrintl(make_lrd_cw(0xe38e38e38e38e000ULL,0xbffb,0x0a7f)), 0L);
CHECKL(lrintl(make_lrd_cw(0xe38e38e38e38e000ULL,0xbffb,0x0a7f)), 0L);
CHECKL(lrintl(make_lrd_cw(0xe38e38e38e38e000ULL,0xbffb,0x0e7f)), 0L);
CHECKL(lrintl(make_lrd_cw(0xe38e38e38e38e000ULL,0xbffb,0x0e7f)), 0L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x400e,0x027f)), 32768L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x400e,0x027f)), 32768L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x400e,0x067f)), 32768L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x400e,0x067f)), 32768L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x400e,0x0a7f)), 32768L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x400e,0x0a7f)), 32768L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x400e,0x0e7f)), 32768L);
CHECKL(lrintl(make_lrd_cw(0x8000000000000000ULL,0x400e,0x0e7f)), 32768L);
#if !defined(RT_ARCH_AMD64)
/* c90 says that the constant is 2147483648 (which is not representable as a signed 32-bit
* value). To that constant you've then applied the negation operation. c90 doesn't have
* negative constants, only positive ones that have been negated. */
CHECKL(lrintl(make_lrd_cw(0xad78ebc5ac620000ULL,0xc041,0x027f)), (long)(-2147483647L - 1));
CHECKL(lrintl(make_lrd_cw(0xad78ebc5ac620000ULL,0xc041,0x027f)), (long)(-2147483647L - 1));
CHECKL(lrintl(make_lrd_cw(0xad78ebc5ac620000ULL,0xc041,0x067f)), (long)(-2147483647L - 1));
CHECKL(lrintl(make_lrd_cw(0xad78ebc5ac620000ULL,0xc041,0x067f)), (long)(-2147483647L - 1));
CHECKL(lrintl(make_lrd_cw(0xad78ebc5ac620000ULL,0xc041,0x0a7f)), (long)(-2147483647L - 1));
CHECKL(lrintl(make_lrd_cw(0xad78ebc5ac620000ULL,0xc041,0x0a7f)), (long)(-2147483647L - 1));
CHECKL(lrintl(make_lrd_cw(0xad78ebc5ac620000ULL,0xc041,0x0e7f)), (long)(-2147483647L - 1));
CHECKL(lrintl(make_lrd_cw(0xad78ebc5ac620000ULL,0xc041,0x0e7f)), (long)(-2147483647L - 1));
#endif
set_cw(0x27f);
CHECK(logl(2.7182818284590452353602874713526625L), 1.0);
CHECK(remainderl(1.0L, 1.0L), 0.0);
CHECK(remainderl(1.0L, 1.5L), -0.5);
CHECK(remainderl(42.0L, 34.25L), 7.75);
CHECK(remainderf(43.0, 34.25), 8.75);
CHECK(remainder(44.25, 34.25), 10.00);
double rd1 = 44.25;
double rd2 = 34.25;
CHECK(remainder(rd1, rd2), 10.00);
CHECK(remainder(2.5, 2.0), 0.5);
CHECK(remainder(2.5, 2.0), 0.5);
CHECK(remainder(2.5, 2.0), 0.5);
CHECKLL(testremainder(), 1);
/* Only works in extended precision, while double precision is default on BSD (including Darwin) */
set_cw(0x37f);
CHECK(rintl(1.0L), 1.0);
CHECK(rintl(1.4L), 1.0);
CHECK(rintl(1.3L), 1.0);
CHECK(rintl(0.9L), 1.0);
CHECK(rintl(3123.1232L), 3123.0);
CHECK(rint(3985.13454), 3985.0);
CHECK(rintf(9999.999), 10000.0);
set_cw(0x27f);
CHECK(sinl(1.0L), 0.84147098480789650664L);
#if 0
lrd = 180.0L;
CHECK(sinl(lrd), -0.801152635733830477871L);
#else
lrd = 180.0L;
lrdExpect = SIN180a;
lrdResult = sinl(lrd);
if (lrdResult != lrdExpect)
{
lrdExpect = SIN180b;
if (lrdResult != lrdExpect)
{
bitch("sinl(lrd)", &lrdResult, &lrdExpect);
cErrors++;
}
}
#endif
#if 0
CHECK(sinl(180.0L), SIN180);
#else
lrdExpect = SIN180a;
lrdResult = sinl(180.0L);
if (lrdResult != lrdExpect)
{
lrdExpect = SIN180b;
if (lrdResult != lrdExpect)
{
bitch("sinl(180.0L)", &lrdResult, &lrdExpect);
cErrors++;
}
}
#endif
CHECKLL(testsin(), 1);
CHECK(sqrtl(1.0L), 1.0);
CHECK(sqrtl(4.0L), 2.0);
CHECK(sqrtl(1525225.0L), 1235.0);
CHECK(tanl(0.0L), 0.0);
CHECK(tanl(0.7853981633974483096156608458198757L), 1.0);
CHECK(powl(0.0, 0.0), 1.0);
CHECK(powl(2.0, 2.0), 4.0);
CHECK(powl(3.0, 3.0), 27.0);
return cErrors;
}
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
#if 0
#define floatx_to_int32 floatx80_to_int32
#define floatx_to_int64 floatx80_to_int64
#define floatx_to_int32_round_to_zero floatx80_to_int32_round_to_zero
#define floatx_to_int64_round_to_zero floatx80_to_int64_round_to_zero
#define floatx_abs floatx80_abs
#define floatx_chs floatx80_chs
#define floatx_round_to_int(foo, bar) floatx80_round_to_int(foo, NULL)
#define floatx_compare floatx80_compare
#define floatx_compare_quiet floatx80_compare_quiet
#undef sin
#undef cos
#undef sqrt
#undef pow
#undef log
#undef tan
#undef atan2
#undef floor
#undef ceil
#undef ldexp
#define sin sinl
#define cos cosl
#define sqrt sqrtl
#define pow powl
#define log logl
#define tan tanl
#define atan2 atan2l
#define floor floorl
#define ceil ceill
#define ldexp ldexpl
typedef long double CPU86_LDouble;
typedef union {
long double d;
struct {
unsigned long long lower;
unsigned short upper;
} l;
} CPU86_LDoubleU;
/* the following deal with x86 long double-precision numbers */
#define MAXEXPD 0x7fff
#define EXPBIAS 16383
#define EXPD(fp) (fp.l.upper & 0x7fff)
#define SIGND(fp) ((fp.l.upper) & 0x8000)
#define MANTD(fp) (fp.l.lower)
#define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS
typedef long double floatx80;
#define STATUS_PARAM , void *pv
static floatx80 floatx80_round_to_int( floatx80 a STATUS_PARAM)
{
return rintl(a);
}
struct myenv
{
unsigned int fpstt; /* top of stack index */
unsigned int fpus;
unsigned int fpuc;
unsigned char fptags[8]; /* 0 = valid, 1 = empty */
union {
#ifdef USE_X86LDOUBLE
CPU86_LDouble d __attribute__((aligned(16)));
#else
CPU86_LDouble d;
#endif
} fpregs[8];
} my_env, env_org, env_res, *env = &my_env;
#define ST0 (env->fpregs[env->fpstt].d)
#define ST(n) (env->fpregs[(env->fpstt + (n)) & 7].d)
#define ST1 ST(1)
#define MAXTAN 9223372036854775808.0
static inline void fpush(void)
{
env->fpstt = (env->fpstt - 1) & 7;
env->fptags[env->fpstt] = 0; /* validate stack entry */
}
static inline void fpop(void)
{
env->fptags[env->fpstt] = 1; /* invalidate stack entry */
env->fpstt = (env->fpstt + 1) & 7;
}
static void helper_f2xm1(void)
{
ST0 = pow(2.0,ST0) - 1.0;
}
static void helper_fyl2x(void)
{
CPU86_LDouble fptemp;
fptemp = ST0;
if (fptemp>0.0){
fptemp = log(fptemp)/log(2.0); /* log2(ST) */
ST1 *= fptemp;
fpop();
} else {
env->fpus &= (~0x4700);
env->fpus |= 0x400;
}
}
static void helper_fptan(void)
{
CPU86_LDouble fptemp;
fptemp = ST0;
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
env->fpus |= 0x400;
} else {
ST0 = tan(fptemp);
fpush();
ST0 = 1.0;
env->fpus &= (~0x400); /* C2 <-- 0 */
/* the above code is for |arg| < 2**52 only */
}
}
static void helper_fpatan(void)
{
CPU86_LDouble fptemp, fpsrcop;
fpsrcop = ST1;
fptemp = ST0;
ST1 = atan2(fpsrcop,fptemp);
fpop();
}
static void helper_fxtract(void)
{
CPU86_LDoubleU temp;
unsigned int expdif;
temp.d = ST0;
expdif = EXPD(temp) - EXPBIAS;
/*DP exponent bias*/
ST0 = expdif;
fpush();
BIASEXPONENT(temp);
ST0 = temp.d;
}
static void helper_fprem1(void)
{
CPU86_LDouble dblq, fpsrcop, fptemp;
CPU86_LDoubleU fpsrcop1, fptemp1;
int expdif;
int q;
fpsrcop = ST0;
fptemp = ST1;
fpsrcop1.d = fpsrcop;
fptemp1.d = fptemp;
expdif = EXPD(fpsrcop1) - EXPD(fptemp1);
if (expdif < 53) {
dblq = fpsrcop / fptemp;
dblq = (dblq < 0.0)? ceil(dblq): floor(dblq);
ST0 = fpsrcop - fptemp*dblq;
q = (int)dblq; /* cutting off top bits is assumed here */
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
/* (C0,C1,C3) <-- (q2,q1,q0) */
env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */
env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */
env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */
} else {
env->fpus |= 0x400; /* C2 <-- 1 */
fptemp = pow(2.0, expdif-50);
fpsrcop = (ST0 / ST1) / fptemp;
/* fpsrcop = integer obtained by rounding to the nearest */
fpsrcop = (fpsrcop-floor(fpsrcop) < ceil(fpsrcop)-fpsrcop)?
floor(fpsrcop): ceil(fpsrcop);
ST0 -= (ST1 * fpsrcop * fptemp);
}
}
static void helper_fprem(void)
{
#if 0
LogFlow(("helper_fprem: ST0=%.*Rhxs ST1=%.*Rhxs fpus=%#x\n", sizeof(ST0), &ST0, sizeof(ST1), &ST1, env->fpus));
__asm__ __volatile__("fldt (%2)\n"
"fldt (%1)\n"
"fprem \n"
"fnstsw (%0)\n"
"fstpt (%1)\n"
"fstpt (%2)\n"
: : "r" (&env->fpus), "r" (&ST0), "r" (&ST1) : "memory");
LogFlow(("helper_fprem: -> ST0=%.*Rhxs fpus=%#x c\n", sizeof(ST0), &ST0, env->fpus));
#else
CPU86_LDouble dblq, fpsrcop, fptemp;
CPU86_LDoubleU fpsrcop1, fptemp1;
int expdif;
int q;
fpsrcop = ST0;
fptemp = ST1;
fpsrcop1.d = fpsrcop;
fptemp1.d = fptemp;
expdif = EXPD(fpsrcop1) - EXPD(fptemp1);
if ( expdif < 53 ) {
dblq = fpsrcop / fptemp;
dblq = (dblq < 0.0)? ceil(dblq): floor(dblq);
ST0 = fpsrcop - fptemp*dblq;
q = (int)dblq; /* cutting off top bits is assumed here */
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
/* (C0,C1,C3) <-- (q2,q1,q0) */
env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */
env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */
env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */
} else {
env->fpus |= 0x400; /* C2 <-- 1 */
fptemp = pow(2.0, expdif-50);
fpsrcop = (ST0 / ST1) / fptemp;
/* fpsrcop = integer obtained by chopping */
fpsrcop = (fpsrcop < 0.0)?
-(floor(fabs(fpsrcop))): floor(fpsrcop);
ST0 -= (ST1 * fpsrcop * fptemp);
}
#endif
}
static void helper_fyl2xp1(void)
{
CPU86_LDouble fptemp;
fptemp = ST0;
if ((fptemp+1.0)>0.0) {
fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */
ST1 *= fptemp;
fpop();
} else {
env->fpus &= (~0x4700);
env->fpus |= 0x400;
}
}
static void helper_fsqrt(void)
{
CPU86_LDouble fptemp;
fptemp = ST0;
if (fptemp<0.0) {
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
env->fpus |= 0x400;
}
ST0 = sqrt(fptemp);
}
static void helper_fsincos(void)
{
CPU86_LDouble fptemp;
fptemp = ST0;
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
env->fpus |= 0x400;
} else {
ST0 = sin(fptemp);
fpush();
ST0 = cos(fptemp);
env->fpus &= (~0x400); /* C2 <-- 0 */
/* the above code is for |arg| < 2**63 only */
}
}
static void helper_frndint(void)
{
ST0 = floatx_round_to_int(ST0, &env->fp_status);
}
static void helper_fscale(void)
{
ST0 = ldexp (ST0, (int)(ST1));
}
static void helper_fsin(void)
{
CPU86_LDouble fptemp;
fptemp = ST0;
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
env->fpus |= 0x400;
} else {
ST0 = sin(fptemp);
env->fpus &= (~0x400); /* C2 <-- 0 */
/* the above code is for |arg| < 2**53 only */
}
}
static void helper_fcos(void)
{
CPU86_LDouble fptemp;
fptemp = ST0;
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
env->fpus |= 0x400;
} else {
ST0 = cos(fptemp);
env->fpus &= (~0x400); /* C2 <-- 0 */
/* the above code is for |arg5 < 2**63 only */
}
}
static void helper_fxam_ST0(void)
{
CPU86_LDoubleU temp;
int expdif;
temp.d = ST0;
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
if (SIGND(temp))
env->fpus |= 0x200; /* C1 <-- 1 */
/* XXX: test fptags too */
expdif = EXPD(temp);
if (expdif == MAXEXPD) {
#ifdef USE_X86LDOUBLE
if (MANTD(temp) == 0x8000000000000000ULL)
#else
if (MANTD(temp) == 0)
#endif
env->fpus |= 0x500 /*Infinity*/;
else
env->fpus |= 0x100 /*NaN*/;
} else if (expdif == 0) {
if (MANTD(temp) == 0)
env->fpus |= 0x4000 /*Zero*/;
else
env->fpus |= 0x4400 /*Denormal*/;
} else {
env->fpus |= 0x400;
}
}
void check_env(void)
{
int i;
for (i = 0; i < 8; i++)
{
CPU86_LDoubleU my, res;
my.d = env->fpregs[i].d;
res.d = env_res.fpregs[i].d;
if ( my.l.lower != res.l.lower
|| my.l.upper != res.l.upper)
printf("register %i: %#018llx:%#06x\n"
" expected %#018llx:%#06x\n",
i,
my.l.lower, my.l.upper,
res.l.lower, res.l.upper);
}
for (i = 0; i < 8; i++)
if (env->fptags[i] != env_res.fptags[i])
printf("tag %i: %d != %d\n", i, env->fptags[i], env_res.fptags[i]);
if (env->fpstt != env_res.fpstt)
printf("fpstt: %#06x != %#06x\n", env->fpstt, env_res.fpstt);
if (env->fpuc != env_res.fpuc)
printf("fpuc: %#06x != %#06x\n", env->fpuc, env_res.fpuc);
if (env->fpus != env_res.fpus)
printf("fpus: %#06x != %#06x\n", env->fpus, env_res.fpus);
}
#endif /* not used. */
#if 0 /* insert this into helper.c */
/* FPU helpers */
CPU86_LDoubleU my_st[8];
unsigned int my_fpstt;
unsigned int my_fpus;
unsigned int my_fpuc;
unsigned char my_fptags[8];
void hlp_fpu_enter(void)
{
int i;
for (i = 0; i < 8; i++)
my_st[i].d = env->fpregs[i].d;
my_fpstt = env->fpstt;
my_fpus = env->fpus;
my_fpuc = env->fpuc;
memcpy(&my_fptags, &env->fptags, sizeof(my_fptags));
}
void hlp_fpu_leave(const char *psz)
{
int i;
Log(("/*code*/ \n"));
for (i = 0; i < 8; i++)
Log(("/*code*/ *(unsigned long long *)&env_org.fpregs[%d] = %#018llxULL; ((unsigned short *)&env_org.fpregs[%d])[4] = %#06x; env_org.fptags[%d]=%d;\n",
i, my_st[i].l.lower, i, my_st[i].l.upper, i, my_fptags[i]));
Log(("/*code*/ env_org.fpstt=%#x;\n", my_fpstt));
Log(("/*code*/ env_org.fpus=%#x;\n", my_fpus));
Log(("/*code*/ env_org.fpuc=%#x;\n", my_fpuc));
for (i = 0; i < 8; i++)
{
CPU86_LDoubleU u;
u.d = env->fpregs[i].d;
Log(("/*code*/ *(unsigned long long *)&env_res.fpregs[%d] = %#018llxULL; ((unsigned short *)&env_res.fpregs[%d])[4] = %#06x; env_res.fptags[%d]=%d;\n",
i, u.l.lower, i, u.l.upper, i, env->fptags[i]));
}
Log(("/*code*/ env_res.fpstt=%#x;\n", env->fpstt));
Log(("/*code*/ env_res.fpus=%#x;\n", env->fpus));
Log(("/*code*/ env_res.fpuc=%#x;\n", env->fpuc));
Log(("/*code*/ my_env = env_org;\n"));
Log(("/*code*/ %s();\n", psz));
Log(("/*code*/ check_env();\n"));
}
#endif /* helper.c */
extern void testmath2(void )
{
#if 0
#include "/tmp/code.h"
#endif
}
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
#ifdef MATHTEST_STANDALONE
void test_fops(double a, double b)
{
printf("a=%f b=%f a+b=%f\n", a, b, a + b);
printf("a=%f b=%f a-b=%f\n", a, b, a - b);
printf("a=%f b=%f a*b=%f\n", a, b, a * b);
printf("a=%f b=%f a/b=%f\n", a, b, a / b);
printf("a=%f b=%f fmod(a, b)=%f\n", a, b, (double)fmod(a, b));
printf("a=%f sqrt(a)=%f\n", a, (double)sqrtl(a));
printf("a=%f sin(a)=%f\n", a, (double)sinl(a));
printf("a=%f cos(a)=%f\n", a, (double)cos(a));
printf("a=%f tan(a)=%f\n", a, (double)tanl(a));
printf("a=%f log(a)=%f\n", a, (double)log(a));
printf("a=%f exp(a)=%f\n", a, (double)exp(a));
printf("a=%f b=%f atan2(a, b)=%f\n", a, b, atan2(a, b));
/* just to test some op combining */
printf("a=%f asin(sinl(a))=%f\n", a, (double)asin(sinl(a)));
printf("a=%f acos(cos(a))=%f\n", a, (double)acos(cos(a)));
printf("a=%f atan(tanl(a))=%f\n", a, (double)atan(tanl(a)));
}
int main()
{
unsigned cErrors = testmath();
testmath2();
test_fops(2, 3);
test_fops(1.4, -5);
printf("cErrors=%u\n", cErrors);
return cErrors;
}
#endif
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