sqrt()
Return the square root of the argument.
Syntax
sqrt(argument)
Parameter
Parameter | Definition |
|---|---|
argument | numeric value whose mathematical square root is returned *Valid Values* |
Description
The sqrt() function returns the square root of the positive integer or real value argument.
Example
The following PSL script compares the output of the sqrt() function with that derived from the trigonometric identity ln(xa) = a ln(x) for the integers 1 through 10:
function main() {
printf("SQUARE ROOT AND EXP(0.5 * LOGE) COMPARISON\n\n");
printf(" n sqrt(n) exp(0.5 * loge(n))\n");
printf(" -- ------- -----------------\n");
local i;
i = 0;
while (i++ <= 10) {
printf(" %2d %7.5f %7.5f\n",i,sqrt(i),exp(0.5 * loge(i)));
}
}
printf("SQUARE ROOT AND EXP(0.5 * LOGE) COMPARISON\n\n");
printf(" n sqrt(n) exp(0.5 * loge(n))\n");
printf(" -- ------- -----------------\n");
local i;
i = 0;
while (i++ <= 10) {
printf(" %2d %7.5f %7.5f\n",i,sqrt(i),exp(0.5 * loge(i)));
}
}
The example produces the following output:
SQUARE ROOT AND EXP(0.5 * LOGE) COMPARISON
n sqrt(n) exp(0.5 * loge(n))
-- ------- -----------------
1 1.00000 1.00000
2 1.41421 1.41421
3 1.73205 1.73205
4 2.00000 2.00000
5 2.23607 2.23607
6 2.44949 2.44949
7 2.64575 2.64575
8 2.82843 2.82843
9 3.00000 3.00000
10 3.16228 3.16228
n sqrt(n) exp(0.5 * loge(n))
-- ------- -----------------
1 1.00000 1.00000
2 1.41421 1.41421
3 1.73205 1.73205
4 2.00000 2.00000
5 2.23607 2.23607
6 2.44949 2.44949
7 2.64575 2.64575
8 2.82843 2.82843
9 3.00000 3.00000
10 3.16228 3.16228
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