CACOS(3) BSD Library Functions Manual CACOS(3)NAME
cacos -- complex inverse cosine function
SYNOPSIS
double complex
cacos(double complex z);
long double complex
cacosl(long double complex z);
float complex
cacosf(float complex z);
DESCRIPTION
cacos(z) computes the inverse cosine of the complex floating-point number z, with branch cuts outside the interval [-1,1] along the real
axis.
cacos() returns values in a strip of the complex plane with unbounded imaginary part, and real part in the interval [0, Pi].
For all complex floating point numbers z, cacos(conj(z)) = conj(cacos(z)).
SPECIAL VALUES
The conjugate symmetry of cacos() is used to abbreviate the specification of special values.
cacos(+-0 + 0i) returns Pi/2 - 0i.
cacos(+-0 + NaN i) returns Pi/2 + NaN i.
cacos(x + inf i) returns Pi/2 - inf i, for finite x.
cacos(x + NaN i) returns NaN + NaN i, for finite nonzero x.
cacos(-inf + yi) returns Pi - inf i, for finite positive-signed y.
cacos(inf + yi) returns 0 - inf i, for finite positive-signed y.
cacos(-inf + inf i) returns 3Pi/4 - inf i.
cacos(inf + inf i) returns Pi/4 - inf i.
cacos(+-inf + NaN i) returns NaN + inf i.
cacos(NaN + yi) returns NaN + NaN i, for finite y.
cacos(NaN + inf i) returns NaN - inf i.
cacos(NaN + NaN i) returns NaN + NaN i.
NOTES SEE ALSO complex(3)STANDARDS
The cacos() function conforms to ISO/IEC 9899:2011.
4th Berkeley Distribution December 11, 2006 4th Berkeley Distribution
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CACOS(3) BSD Library Functions Manual CACOS(3)NAME
cacos -- complex inverse cosine function
SYNOPSIS
double complex
cacos(double complex z);
long double complex
cacosl(long double complex z);
float complex
cacosf(float complex z);
DESCRIPTION
cacos(z) computes the inverse cosine of the complex floating-point number z, with branch cuts outside the interval [-1,1] along the real
axis.
cacos() returns values in a strip of the complex plane with unbounded imaginary part, and real part in the interval [0, Pi].
For all complex floating point numbers z, cacos(conj(z)) = conj(cacos(z)).
SPECIAL VALUES
The conjugate symmetry of cacos() is used to abbreviate the specification of special values.
cacos(+-0 + 0i) returns Pi/2 - 0i.
cacos(+-0 + NaN i) returns Pi/2 + NaN i.
cacos(x + inf i) returns Pi/2 - inf i, for finite x.
cacos(x + NaN i) returns NaN + NaN i, for finite nonzero x.
cacos(-inf + yi) returns Pi - inf i, for finite positive-signed y.
cacos(inf + yi) returns 0 - inf i, for finite positive-signed y.
cacos(-inf + inf i) returns 3Pi/4 - inf i.
cacos(inf + inf i) returns Pi/4 - inf i.
cacos(+-inf + NaN i) returns NaN + inf i.
cacos(NaN + yi) returns NaN + NaN i, for finite y.
cacos(NaN + inf i) returns NaN - inf i.
cacos(NaN + NaN i) returns NaN + NaN i.
NOTES SEE ALSO complex(3)STANDARDS
The cacos() function conforms to ISO/IEC 9899:2011.
4th Berkeley Distribution December 11, 2006 4th Berkeley Distribution
Hi,
I have the calculations which return me infinity (inf), -inf, other very larger number when I printed them out.
I did try to insert some control condition not to print these out if the above condition is met. The code I implemented is something like:-
for (i=0;i<=1000;i++){
... (3 Replies)
Hi,
Does anyone seem this kind of output from uptime and top where "load average: inf, inf, inf"
is this possible problem with the processor?
Cpu states:
CPU LOAD USER NICE SYS IDLE BLOCK SWAIT INTR SSYS
0 0.10 5.4% 0.0% 4.0% 90.6% 0.0% 0.0% 0.0% 0.0%... (1 Reply)
Hi, all
I have a field in a file looks like this(hundreds of lines):
inf
1.24101
-0.185947
-0.349179
inf
0.126597
0.240142
-0.12031And what I expect is:
inf
1.241
-0.186
-0.349
inf
0.127 (7 Replies)