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26 lines
700 B
C
26 lines
700 B
C
#include <assert.h>
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#include "safemult.h"
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int main() {
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int16 a;
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int32 b;
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int64 c;
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assert(imult16(4,10000,&a)==0);
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assert(imult16(-4,10000,&a)==0);
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assert(imult16(5,10,&a)==1 && a==50);
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assert(imult16(-3,10000,&a)==1 && a==-30000);
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assert(imult32(0x40000000,2,&b)==0);
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assert(imult32(-0x40000000,2,&b)==1 && b==-0x80000000ll);
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assert(imult32(0x3fffffff,2,&b)==1 && b==0x7ffffffe);
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assert(imult64(0x4000000000000000ll,2,&c)==0);
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assert(imult64(-0x4000000000000000ll,2,&c)==1 && c==(int64)-0x8000000000000000ll);
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assert(imult64(0x3fffffffffffffffll,2,&c)==1 && c==0x7ffffffffffffffell);
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assert(umult64(0x0000000100000002ull,0x00000000ffffffffull,&c)==0);
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return 0;
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}
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