xref: /illumos-gate/usr/src/lib/libm/common/C/sqrt.c (revision ddc0e0b5)
125c28e83SPiotr Jasiukajtis /*
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2125c28e83SPiotr Jasiukajtis /*
2225c28e83SPiotr Jasiukajtis  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
2325c28e83SPiotr Jasiukajtis  */
2425c28e83SPiotr Jasiukajtis /*
2525c28e83SPiotr Jasiukajtis  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
2625c28e83SPiotr Jasiukajtis  * Use is subject to license terms.
2725c28e83SPiotr Jasiukajtis  */
2825c28e83SPiotr Jasiukajtis 
29*ddc0e0b5SRichard Lowe #pragma weak __sqrt = sqrt
3025c28e83SPiotr Jasiukajtis 
3125c28e83SPiotr Jasiukajtis #include "libm.h"
3225c28e83SPiotr Jasiukajtis 
3325c28e83SPiotr Jasiukajtis 
3425c28e83SPiotr Jasiukajtis extern double __inline_sqrt(double);
3525c28e83SPiotr Jasiukajtis 
3625c28e83SPiotr Jasiukajtis double
sqrt(double x)3725c28e83SPiotr Jasiukajtis sqrt(double x) {
3825c28e83SPiotr Jasiukajtis 	double	z = __inline_sqrt(x);
3925c28e83SPiotr Jasiukajtis 
4025c28e83SPiotr Jasiukajtis 	if (isnan(x))
4125c28e83SPiotr Jasiukajtis 		return (z);
4225c28e83SPiotr Jasiukajtis 	return ((x < 0.0)? _SVID_libm_err(x, x, 26) : z);
4325c28e83SPiotr Jasiukajtis }
4425c28e83SPiotr Jasiukajtis 
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