Last change
on this file was 444, checked in by coas-nagasima, 4 years ago |
muslのソースコードを追加
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File size:
358 bytes
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1 | #include <stdlib.h>
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2 | #include <inttypes.h>
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3 |
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4 | uint64_t __rand48_step(unsigned short *xi, unsigned short *lc);
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5 | extern unsigned short __seed48[7];
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6 |
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7 | double erand48(unsigned short s[3])
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8 | {
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9 | union {
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10 | uint64_t u;
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11 | double f;
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12 | } x = { 0x3ff0000000000000ULL | __rand48_step(s, __seed48+3)<<4 };
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13 | return x.f - 1.0;
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14 | }
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15 |
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16 | double drand48(void)
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17 | {
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18 | return erand48(__seed48);
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19 | }
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