opendarwin man page for acos

Query: acos

OS: opendarwin

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

ACOS(3) 						   BSD Library Functions Manual 						   ACOS(3)

NAME
acos -- arc cosine function
SYNOPSIS
#include <math.h> double acos(double x);
DESCRIPTION
The acos() function computes the principal value of the arc cosine of x in the range [0, pi].
SPECIAL VALUES
acos(1) returns +0. acos(x) returns a NAN and raises the "invalid" floating-point exception for |x| > 1.
SEE ALSO
sin(3), cos(3), tan(3), asin(3), atan(3), atan2(3), sinh(3), cosh(3), tanh(3), math(3), matherr(3)
STANDARDS
The acos() function conforms to ISO/IEC 9899:1999(E).
BSD
November 14, 2002 BSD
Related Man Pages
asin(3) - mojave
asinl(3) - mojave
acosf(3) - osx
asinf(3) - osx
acos(3) - freebsd
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