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sub256c.cpp
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#include "ttmath/ttmath.h"
typedef ttmath::UInt<TTMATH_BITS(256)> u256;
int main() {
u256 s("0x4bfcd8bb2ac462735b48a17580690283980aa2d679f091c64364594df113ea37");
u256 r;
for (u256 i = 0; i < 1048576; ++i) {
volatile unsigned v = 0;
u256 z = s + v;
u256 y("0x97f9b1765588c4e6b69142eb00d20507301545acf3e1238c86c8b29be227d46e");
u256 x = z;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x = z;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x = z;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x = z;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x = z;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x = z;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x = z;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x = z;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y; x -= y;
r = x;
}
return r != "0x4bfcd8bb2ac462735b48a17580690283980aa2d679f091c64364594df113ea37";
}