Sin, Cos, Sinh, and Cosh#

Sin, cos, sinh, and cosh on PowerVR architecture have a reasonably low cost of four cycles.

This is broken down as:

  • Two cycles of reduction

  • sinc

  • One conditional.

fragColor.x = sin(t.x); // four cycles
{fred}
{fred}
{fsinc}
{fmul, mov} // plus conditional

fragColor.x = cos(t.x); // four cycles
{fred}
{fred}
{fsinc}
{fmul, mov} // plus conditional

fragColor.x = cosh(t.x); // three cycles
{fmul, fmul, mov, mov}
{fexp}
{sop, sop}

fragColor.x = sinh(t.x); // three cycles
{fmul, fmul, mov, mov}
{fexp}
{sop, sop}