CRE Programmer's Guide

Math Functions

Common Run-Time Environment (CRE) Programmer’s Guide—528146-004

7-7

Cos

The Cos functions return the cosine of an angle.

angle

is the angle, expressed in radians, who cosine is returned.

Return Value

The Cos functions return the cosine of angle. The cosine is in the range:

-1.0 less than or equal to cos(

angle ) less than or equal to 1.0

Cosh

The Cosh functions return a hyperbolic cosine.

number

is the number whose hyperbolic cosine is returned.

Return Value

The Cosh functions return the hyperbolic cosine of number. The value returned is:

exp(

number ) + exp( -number )

Considerations

An arithmetic fault occurs if an intermediate calculation causes an overflow.

REAL(32) PROC RTL_Cos_Real32_( angle );

REAL(32) angle; ! in TNS only

REAL(64) PROC RTL_Cos_Real64_( angle );

REAL(64) angle; ! in TNS only

REAL(32) PROC { CRE_Cosh_Real32_ } ( number );

{ RTL_Cosh_Real32_ }

REAL(32) number ; ! in TNS only

REAL(64) PROC { CRE_Cosh_Real64_ } ( number );

{ RTL_Cosh_Real64_ }

REAL(64) number ; ! in TNS only