1
0
mirror of https://github.com/wine-mirror/wine synced 2024-07-09 04:16:08 +00:00

msvcrt: Use the cos()/cosf() implementation from the bundled musl library.

This commit is contained in:
Alexandre Julliard 2023-04-04 14:53:15 +02:00
parent 5ddd46592d
commit 6ec636f288
3 changed files with 4 additions and 147 deletions

View File

@ -219,9 +219,6 @@ float CDECL _chgsignf( float num )
#endif
#ifndef __i386__
extern float __sindf(double x);
extern float __cosdf(double x);
static const UINT64 exp2f_T[] = {
0x3ff0000000000000ULL, 0x3fefd9b0d3158574ULL, 0x3fefb5586cf9890fULL, 0x3fef9301d0125b51ULL,
0x3fef72b83c7d517bULL, 0x3fef54873168b9aaULL, 0x3fef387a6e756238ULL, 0x3fef1e9df51fdee1ULL,
@ -494,70 +491,6 @@ float CDECL atanf( float x )
extern int __rem_pio2f(float x, double *y);
/*********************************************************************
* cosf (MSVCRT.@)
*
* Copied from musl: src/math/cosf.c
*/
float CDECL cosf( float x )
{
static const double c1pio2 = 1*M_PI_2,
c2pio2 = 2*M_PI_2,
c3pio2 = 3*M_PI_2,
c4pio2 = 4*M_PI_2;
double y;
UINT32 ix;
unsigned n, sign;
ix = *(UINT32*)&x;
sign = ix >> 31;
ix &= 0x7fffffff;
if (ix <= 0x3f490fda) { /* |x| ~<= pi/4 */
if (ix < 0x39800000) { /* |x| < 2**-12 */
/* raise inexact if x != 0 */
fp_barrierf(x + 0x1p120f);
return 1.0f;
}
return __cosdf(x);
}
if (ix <= 0x407b53d1) { /* |x| ~<= 5*pi/4 */
if (ix > 0x4016cbe3) /* |x| ~> 3*pi/4 */
return -__cosdf(sign ? x + c2pio2 : x - c2pio2);
else {
if (sign)
return __sindf(x + c1pio2);
else
return __sindf(c1pio2 - x);
}
}
if (ix <= 0x40e231d5) { /* |x| ~<= 9*pi/4 */
if (ix > 0x40afeddf) /* |x| ~> 7*pi/4 */
return __cosdf(sign ? x + c4pio2 : x - c4pio2);
else {
if (sign)
return __sindf(-x - c3pio2);
else
return __sindf(x - c3pio2);
}
}
/* cos(Inf or NaN) is NaN */
if (isinf(x)) return math_error(_DOMAIN, "cosf", x, 0, x - x);
if (ix >= 0x7f800000)
return x - x;
/* general argument reduction needed */
n = __rem_pio2f(x, &y);
switch (n & 3) {
case 0: return __cosdf(y);
case 1: return __sindf(-y);
case 2: return -__cosdf(y);
default: return __sindf(y);
}
}
/*********************************************************************
* expf (MSVCRT.@)
*/
@ -1309,86 +1242,6 @@ double CDECL rint(double x)
extern int __rem_pio2(double x, double *y);
/* Copied from musl: src/math/__sin.c */
static double __sin(double x, double y, int iy)
{
static const double S1 = -1.66666666666666324348e-01,
S2 = 8.33333333332248946124e-03,
S3 = -1.98412698298579493134e-04,
S4 = 2.75573137070700676789e-06,
S5 = -2.50507602534068634195e-08,
S6 = 1.58969099521155010221e-10;
double z, r, v, w;
z = x * x;
w = z * z;
r = S2 + z * (S3 + z * S4) + z * w * (S5 + z * S6);
v = z * x;
if (iy == 0)
return x + v * (S1 + z * r);
else
return x - ((z * (0.5 * y - v * r) - y) - v * S1);
}
/* Copied from musl: src/math/__cos.c */
static double __cos(double x, double y)
{
static const double C1 = 4.16666666666666019037e-02,
C2 = -1.38888888888741095749e-03,
C3 = 2.48015872894767294178e-05,
C4 = -2.75573143513906633035e-07,
C5 = 2.08757232129817482790e-09,
C6 = -1.13596475577881948265e-11;
double hz, z, r, w;
z = x * x;
w = z * z;
r = z * (C1 + z * (C2 + z * C3)) + w * w * (C4 + z * (C5 + z * C6));
hz = 0.5 * z;
w = 1.0 - hz;
return w + (((1.0 - w) - hz) + (z * r - x * y));
}
/*********************************************************************
* cos (MSVCRT.@)
*
* Copied from musl: src/math/cos.c
*/
double CDECL cos( double x )
{
double y[2];
UINT32 ix;
unsigned n;
ix = *(ULONGLONG*)&x >> 32;
ix &= 0x7fffffff;
/* |x| ~< pi/4 */
if (ix <= 0x3fe921fb) {
if (ix < 0x3e46a09e) { /* |x| < 2**-27 * sqrt(2) */
/* raise inexact if x!=0 */
fp_barrier(x + 0x1p120f);
return 1.0;
}
return __cos(x, 0);
}
/* cos(Inf or NaN) is NaN */
if (isinf(x)) return math_error(_DOMAIN, "cos", x, 0, x - x);
if (ix >= 0x7ff00000)
return x - x;
/* argument reduction */
n = __rem_pio2(x, y);
switch (n & 3) {
case 0: return __cos(y[0], y[1]);
case 1: return -__sin(y[0], y[1], 1);
case 2: return -__cos(y[0], y[1]);
default: return __sin(y[0], y[1], 1);
}
}
/* Copied from musl: src/math/exp_data.c */
static const UINT64 exp_T[] = {
0x0ULL, 0x3ff0000000000000ULL,

View File

@ -62,6 +62,8 @@ double __cdecl cos(double x)
}
/* cos(Inf or NaN) is NaN */
if (isinf(x))
return math_error(_DOMAIN, "cos", x, 0, x - x);
if (ix >= 0x7ff00000)
return x-x;

View File

@ -63,6 +63,8 @@ float __cdecl cosf(float x)
}
/* cos(Inf or NaN) is NaN */
if (isinf(x))
return math_error(_DOMAIN, "cosf", x, 0, x - x);
if (ix >= 0x7f800000)
return x-x;