1SQRT(3M)                                                              SQRT(3M)
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NAME

6       cbrt, sqrt - cube root, square root
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SYNOPSIS

9       #include <math.h>
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11       double cbrt(x)
12       double x;
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14       double sqrt(x)
15       double x;
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DESCRIPTION

18       Cbrt(x) returns the cube root of x.
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20       Sqrt(x) returns the square root of x.
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DIAGNOSTICS

23       On a VAX, sqrt(negative) returns the reserved operand and sets errno to
24       EDOM .
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ERROR (due to Roundoff etc.)

27       Cbrt is accurate to within 0.7 ulps.
28       Sqrt on a VAX is accurate to within 0.501 ulps.
29       Sqrt on a machine that conforms to IEEE 754  is  correctly  rounded  in
30       accordance with the rounding mode in force; the error is less than half
31       an ulp in the default mode (round-to-nearest).  An ulp is one  Unit  in
32       the Last Place carried.
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SEE ALSO

35       math(3M), infnan(3M)
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AUTHOR

38       W. Kahan
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424.3 Berkeley Distribution        May 12, 1986                         SQRT(3M)
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