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5 | sCOS computes the cosine, and sSINCOS computes both. The
14 | in Fp0, and cos(X) is returned in Fp1.
16 | Modifies: Fp0 for SIN or COS; both Fp0 and Fp1 for SINCOS.
18 | Accuracy and Monotonicity: The returned result is within 1 ulp in
23 | Speed: The programs sSIN and sCOS take approximately 150 cycles for
29 | SIN and COS:
67 | SIN(X) = sgn1 * cos(r) and COS(X) = sgn2*sin(r) where
68 | sin(r) and cos(r) are computed as odd and even polynomials
72 | SIN(X) = sgn1 * sin(r) and COS(X) = sgn1*cos(r) where
73 | sin(r) and cos(r) are computed as odd and even polynomials
78 | 7. (|X|<2**(-40)) SIN(X) = X and COS(X) = 1. Exit.
464 |--HIDE 4 CYCLES OF INSTRUCTION; creating 2**(L)*Piby2_1 and 2**(L)*Piby2_2
481 |--We are now ready to perform (R+r) - N*P1 - N*P2, P1 = 2**(L) * Piby2_1 and
489 |--Then, we need to compute A := R-P and a := r-p