ACOS(3F)ACOS(3F)NAME
acos, dacos, qacos, acosd, dacosd, qacosd - FORTRAN arccosine intrinsic
function
SYNOPSIS
real r1, r2
double precision dp1, dp2
real*16 qp1, qp2
real*4 r3, r4
real*8 dp3, dp4
real*16 qp3, qp4
r2 = acos(r1)
dp2 = dacos(dp1)
dp2 = acos(dp1)
qp2 = qacos(qp1)
qp2 = acos(qp1)
r4 = acosd(r3)
dp4 = dacosd(dp3)
dp4 = acosd(dp3)
qp4 = qacosd(qp3)
qp4 = acosd(qp3)DESCRIPTION
acos returns the real arccosine of its real argument, dacos returns the
double-precision arccosine of its double-precision argument, and qacos
returns the real*16 arccosine of its real*16 argument. The absolute
value of the arguments for acos, dacos, and qacos must be less than or
equal to one. The result is in radians and is in the range 0 <= result
<= Pi. The generic form acos may be used with impunity as it derives its
type from that of its argument.
acosd returns the real*4 arccosine of its real*4 argument, dacosd returns
the real*8 arccosine of its real*8 argument, and qacosd returns the
real*16 arccosine of its real*16 argument. The absolute value of the
arguments for acosd, dacosd, and qacosd must be less than or equal to
one. The result is in degrees and is in the range 0 <= result <= 180.
The generic form acosd may be used with impunity as it derives its type
from that of its argument.
SEE ALSOtrig(3M).
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