#include <math.h>#include <stdint.h>float hypotf(float x, float y){union {float f; uint32_t i;} ux = {x}, uy = {y}, ut;float_t z;ux.i &= -1U>>1;uy.i &= -1U>>1;if (ux.i < uy.i) {ut = ux;ux = uy;uy = ut;}x = ux.f;y = uy.f;if (uy.i == 0xff<<23)return y;if (ux.i >= 0xff<<23 || uy.i == 0 || ux.i - uy.i >= 25<<23)return x + y;z = 1;if (ux.i >= (0x7f+60)<<23) {z = 0x1p90f;x *= 0x1p-90f;y *= 0x1p-90f;} else if (uy.i < (0x7f-60)<<23) {z = 0x1p-90f;x *= 0x1p90f;y *= 0x1p90f;}return z*sqrtf((double)x*x + (double)y*y);}