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Searched refs:pio2_hi (Results 1 – 3 of 3) sorted by relevance

/AliOS-Things-master/components/py_engine/engine/lib/libm/
A Dasinfacosf.c26 pio2_hi = 1.5707962513e+00f, /* 0x3fc90fda */ variable
54 return x*pio2_hi + 0x1p-120f; /* asin(+-1) = +-pi/2 with inexact */ in asinf()
66 x = pio2_hi - (2*(s+s*R(z)) - pio2_lo); // dpgeorge: use pio2_hi and pio2_lo in asinf()
104 return 2*pio2_hi + 0x1p-120f; in acosf()
112 return pio2_hi + 0x1p-120f; in acosf()
113 return pio2_hi - (x - (pio2_lo-x*R(x*x))); in acosf()
120 return 2*(pio2_hi - (s+w)); in acosf()
/AliOS-Things-master/components/py_engine/engine/lib/libm_dbl/
A Dacos.c39 pio2_hi = 1.57079632679489655800e+00, /* 0x3FF921FB, 0x54442D18 */ variable
75 return 2*pio2_hi + 0x1p-120f; in acos()
83 return pio2_hi + 0x1p-120f; in acos()
84 return pio2_hi - (x - (pio2_lo-x*R(x*x))); in acos()
91 return 2*(pio2_hi - (s+w)); in acos()
A Dasin.c45 pio2_hi = 1.57079632679489655800e+00, /* 0x3FF921FB, 0x54442D18 */ variable
80 return x*pio2_hi + 0x1p-120f; in asin()
95 x = pio2_hi-(2*(s+s*r)-pio2_lo); in asin()
102 x = 0.5*pio2_hi - (2*s*r - (pio2_lo-2*c) - (0.5*pio2_hi-2*f)); in asin()

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