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Side by Side Diff: fusl/src/prng/drand48.c

Issue 1714623002: [fusl] clang-format fusl (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: headers too Created 4 years, 10 months ago
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1 #include <stdlib.h> 1 #include <stdlib.h>
2 #include <inttypes.h> 2 #include <inttypes.h>
3 3
4 uint64_t __rand48_step(unsigned short *xi, unsigned short *lc); 4 uint64_t __rand48_step(unsigned short* xi, unsigned short* lc);
5 extern unsigned short __seed48[7]; 5 extern unsigned short __seed48[7];
6 6
7 double erand48(unsigned short s[3]) 7 double erand48(unsigned short s[3]) {
8 { 8 union {
9 » union { 9 uint64_t u;
10 » » uint64_t u; 10 double f;
11 » » double f; 11 } x = {0x3ff0000000000000ULL | __rand48_step(s, __seed48 + 3) << 4};
12 » } x = { 0x3ff0000000000000ULL | __rand48_step(s, __seed48+3)<<4 }; 12 return x.f - 1.0;
13 » return x.f - 1.0;
14 } 13 }
15 14
16 double drand48(void) 15 double drand48(void) {
17 { 16 return erand48(__seed48);
18 » return erand48(__seed48);
19 } 17 }
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