diff options
Diffstat (limited to 'lib/libm/common_source/atan.c')
| -rw-r--r-- | lib/libm/common_source/atan.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/lib/libm/common_source/atan.c b/lib/libm/common_source/atan.c index 272c7f1..f29c7d4 100644 --- a/lib/libm/common_source/atan.c +++ b/lib/libm/common_source/atan.c @@ -41,32 +41,32 @@ static char sccsid[] = "@(#)atan.c 8.1 (Berkeley) 6/4/93"; * CODED IN C BY K.C. NG, 4/16/85, REVISED ON 6/10/85. * * Required kernel function: - * atan2(y,x) + * atan2(y,x) * - * Method: - * atan(x) = atan2(x,1.0). + * Method: + * atan(x) = atan2(x,1.0). * * Special case: * if x is NaN, return x itself. * * Accuracy: * 1) If atan2() uses machine PI, then - * + * * atan(x) returns (PI/pi) * (the exact arc tangent of x) nearly rounded; * and PI is the exact pi rounded to machine precision (see atan2 for * details): * * in decimal: - * pi = 3.141592653589793 23846264338327 ..... + * pi = 3.141592653589793 23846264338327 ..... * 53 bits PI = 3.141592653589793 115997963 ..... , - * 56 bits PI = 3.141592653589793 227020265 ..... , + * 56 bits PI = 3.141592653589793 227020265 ..... , * * in hexadecimal: * pi = 3.243F6A8885A308D313198A2E.... * 53 bits PI = 3.243F6A8885A30 = 2 * 1.921FB54442D18 error=.276ulps * 56 bits PI = 3.243F6A8885A308 = 4 * .C90FDAA22168C2 error=.206ulps - * - * In a test run with more than 200,000 random arguments on a VAX, the + * + * In a test run with more than 200,000 random arguments on a VAX, the * maximum observed error in ulps (units in the last place) was * 0.86 ulps. (comparing against (PI/pi)*(exact atan(x))). * @@ -74,7 +74,7 @@ static char sccsid[] = "@(#)atan.c 8.1 (Berkeley) 6/4/93"; * * atan(x) returns the exact atan(x) with error below about 2 ulps. * - * In a test run with more than 1,024,000 random arguments on a VAX, the + * In a test run with more than 1,024,000 random arguments on a VAX, the * maximum observed error in ulps (units in the last place) was * 0.85 ulps. */ |
