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  /src/lib/libm/src/
w_acos.c 34 __weak_alias(acos, _acos)
37 acos(double x) /* wrapper acos */
46 return __kernel_standard(x,x,1); /* acos(|x|>1) */
namespace.h 3 #define acos _acos macro
  /src/tests/lib/libm/
t_acos.c 37 * acos(3) and acosf(3)
40 ATF_LIBM_TEST(acos_is_nan, "Test acos/acosf(x) == NaN, x = NaN, +/-Inf, ![-1..1]")
54 T_LIBM_CHECK_NAN(i, acos, x[i]);
62 ATF_LIBM_TEST(acos_inrange, "Test acos/acosf(x) for some valid values")
80 * Note that acos(x) might be calculated as atan2(sqrt(1-x*x),x).
81 * This means that acos(-1) is atan2(+0,-1), if the sign is wrong
86 T_LIBM_CHECK(i, acos, values[i].x, values[i].y, 1.0e-15);
93 T_LIBM_CHECK_PLUS_ZERO(0, acos, 1.0);
  /src/lib/libm/noieee_src/
n_asincos.c 95 __weak_alias(acos, _acos)
121 /* ACOS(X)
136 * acos(x) = 2*atan2( / -------- , 1 ) .
146 * acos(x) returns (PI/pi) * (the exact arc cosine of x) nearly rounded;
162 * 2.07 ulps. (comparing against (PI/pi)*(exact acos(x)));
166 * acos(x) returns the exact acos(x) with error below about 2 ulps.
174 acos(double x) function
190 return (float)acos(x);
  /src/tests/lib/lua/libm/
h_lualibm.c 25 TEST(acos(cos(M_PI_2)));
lualibm.lua 31 test("acos(cos(M_PI_2))", lm.acos(lm.cos(lm.M_PI_2)))
  /src/include/
tgmath.h 131 #define acos(a) __TG_COMPLEX((a), acos) macro
math.h 238 double acos(double);
  /src/lib/libm/complex/
catrig.c 434 rx = acos(B);
436 rx = acos(-B);
  /src/lib/lua/libm/
libm.c 107 DFUNC_DBL(acos)
243 { "acos", libm_acos },
  /src/usr.bin/xlint/llib/
llib-lstdc 96 double (acos)(double x);
llib-lposix 69 double (acos)(double x);
  /src/lib/libm/
Makefile 446 MAN+= acos.3 acosh.3 asin.3 asinh.3 atan.3 atan2.3 atanh.3 \
469 MLINKS+=acos.3 acosf.3

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