FCOS
Usage: FCOS ST0 Modifies flags: See below.
Computes the cosine of the source operand in register ST(0) and stores the result in ST(0).
Floating-Point Cosine
FCOS ; D9 FF [386,FPU]
FCOS computes the cosine of ST0 (in radians), and stores the result in ST0. The absolute value of ST0 must be less than 2**63.
See also FSINCOS ( FSIN).
FPU Flags Affected
C1 Set to 0 if stack underflow occurred. Set if result was rounded up; cleared otherwise.
Undefined if C2 is 1.
C2 Set to 1 if outside range (-2**63 <source operand <+2**63 ); otherwise, set to 0.
C0, C3 Undefined.
EXAMPLE:
finit | fld st0 55.6
fcos