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msvcrt: Use the atanf() implementation from the bundled musl library.
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@ -292,87 +292,14 @@ int CDECL _isnanf( float num )
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/*********************************************************************
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/*********************************************************************
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* atanf (MSVCRT.@)
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* atanf (MSVCRT.@)
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*
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* Copied from musl: src/math/atanf.c
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*/
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*/
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float CDECL atanf( float x )
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#if _MSVCR_VER == 0 /* other versions call atanf() directly */
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float CDECL MSVCRT_atanf( float x )
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{
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{
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static const float atanhi[] = {
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4.6364760399e-01,
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7.8539812565e-01,
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9.8279368877e-01,
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1.5707962513e+00,
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};
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static const float atanlo[] = {
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5.0121582440e-09,
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3.7748947079e-08,
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3.4473217170e-08,
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7.5497894159e-08,
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};
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static const float aT[] = {
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3.3333328366e-01,
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-1.9999158382e-01,
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1.4253635705e-01,
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-1.0648017377e-01,
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6.1687607318e-02,
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};
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float w, s1, s2, z;
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unsigned int ix, sign;
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int id;
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#if _MSVCR_VER == 0
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if (isnan(x)) return math_error(_DOMAIN, "atanf", x, 0, x);
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if (isnan(x)) return math_error(_DOMAIN, "atanf", x, 0, x);
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#endif
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return atanf( x );
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ix = *(unsigned int*)&x;
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sign = ix >> 31;
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ix &= 0x7fffffff;
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if (ix >= 0x4c800000) { /* if |x| >= 2**26 */
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if (isnan(x))
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return x;
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z = atanhi[3] + 7.5231638453e-37;
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return sign ? -z : z;
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}
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if (ix < 0x3ee00000) { /* |x| < 0.4375 */
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if (ix < 0x39800000) { /* |x| < 2**-12 */
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if (ix < 0x00800000)
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/* raise underflow for subnormal x */
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fp_barrierf(x*x);
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return x;
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}
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id = -1;
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} else {
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x = fabsf(x);
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if (ix < 0x3f980000) { /* |x| < 1.1875 */
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if (ix < 0x3f300000) { /* 7/16 <= |x| < 11/16 */
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id = 0;
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x = (2.0f * x - 1.0f) / (2.0f + x);
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} else { /* 11/16 <= |x| < 19/16 */
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id = 1;
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x = (x - 1.0f) / (x + 1.0f);
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}
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} else {
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if (ix < 0x401c0000) { /* |x| < 2.4375 */
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id = 2;
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x = (x - 1.5f) / (1.0f + 1.5f * x);
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} else { /* 2.4375 <= |x| < 2**26 */
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id = 3;
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x = -1.0f / x;
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}
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}
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}
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/* end of argument reduction */
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z = x * x;
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w = z * z;
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/* break sum from i=0 to 10 aT[i]z**(i+1) into odd and even poly */
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s1 = z * (aT[0] + w * (aT[2] + w * aT[4]));
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s2 = w * (aT[1] + w * aT[3]);
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if (id < 0)
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return x - x * (s1 + s2);
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z = atanhi[id] - ((x * (s1 + s2) - atanlo[id]) - x);
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return sign ? -z : z;
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}
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}
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#endif
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static BOOL sqrtf_validate( float *x )
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static BOOL sqrtf_validate( float *x )
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{
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{
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@ -1257,7 +1257,7 @@
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@ cdecl atan(double)
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@ cdecl atan(double)
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@ cdecl atan2(double double)
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@ cdecl atan2(double double)
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@ cdecl -arch=!i386 asinf(float)
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@ cdecl -arch=!i386 asinf(float)
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@ cdecl -arch=!i386 atanf(float)
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@ cdecl -arch=!i386 atanf(float) MSVCRT_atanf
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@ cdecl -arch=!i386 atan2f(float float)
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@ cdecl -arch=!i386 atan2f(float float)
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@ cdecl -private atexit(ptr) MSVCRT_atexit # not imported to avoid conflicts with Mingw
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@ cdecl -private atexit(ptr) MSVCRT_atexit # not imported to avoid conflicts with Mingw
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@ cdecl atof(str)
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@ cdecl atof(str)
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