42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
#include <math.h>
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#include <stdio.h>
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int main()
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{
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int i;
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for (i = 0; i < 20; i++) {
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printf("------------------------------------------------------\n");
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// printf ( "remainder of 5.3 / 2 is %f\n", remainder (5.3,2) );
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// printf ( "remainder of 18.5 / 4.2 is %f\n", remainder (18.5,4.2) );
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// remainder of 5.3 / 2 is -0.700000
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// remainder of 18.5 / 4.2 is 1.700000
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printf("fmod of 5.3 / 2 is %f\n", fmod(5.3, 2));
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printf("fmod of 18.5 / 4.2 is %f\n", fmod(18.5, 4.2));
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// fmod of 5.3 / 2 is 1.300000
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// fmod of 18.5 / 4.2 is 1.700000
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double param, fractpart, intpart, result;
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int n;
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param = 3.14159265;
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fractpart = modf(param, &intpart);
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printf("%f = %f + %f \n", param, intpart, fractpart);
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// 3.141593 = 3.000000 + 0.141593
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param = 0.95;
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n = 4;
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result = ldexp(param, n);
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printf("%f * 2^%d = %f\n", param, n, result);
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// 0.950000 * 2^4 = 15.200000
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param = 8.0;
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result = frexp(param, &n);
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printf("%f = %f * 2^%d\n", param, result, n);
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// 8.000000 = 0.500000 * 2^4
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param = 50;
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result = frexp(param, &n);
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printf("%f = %f * 2^%d\n", param, result, n);
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}
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}
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