diff options
Diffstat (limited to 'libm/src/k_cos.c')
| -rw-r--r-- | libm/src/k_cos.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libm/src/k_cos.c b/libm/src/k_cos.c index 00916d7..b8cdf8f 100644 --- a/libm/src/k_cos.c +++ b/libm/src/k_cos.c @@ -69,6 +69,17 @@ C6 = -1.13596475577881948265e-11; /* 0xBDA8FAE9, 0xBE8838D4 */ double __kernel_cos(double x, double y) { +#if defined(KRAIT_NEON_OPTIMIZATION) + double hz,z,zz,r,w,k; + + z = x*x; + zz = z*z; + k = x*y; + hz = (float)0.5*z; + r = z*(z*(C1+z*(C2+z*((C3+z*C4)+zz*(C5+z*C6))))); + w = one-hz; + return w + (((one-w)-hz) + (r-k)); +#else double hz,z,r,w; z = x*x; @@ -76,4 +87,5 @@ __kernel_cos(double x, double y) hz = (float)0.5*z; w = one-hz; return w + (((one-w)-hz) + (z*r-x*y)); +#endif } |