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.TH HYPOT 3 .SH NAME hypot \- Euclidean distance .SH SYNOPSIS .B #include <u.h> .br .B #include <libc.h> .PP .nf .B double hypot(double x, double y) .fi .SH DESCRIPTION .I Hypot returns .EX sqrt(x*x + y*y) .EE taking precautions against unwarranted overflows. .SH SOURCE .B /usr/local/plan9/src/libc/port/hypot.c