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Side by Side Diff: fusl/src/math/ilogbf.c

Issue 1581793002: Remove -Wno-unknown-pragmas from fusl build (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
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« fusl/src/internal/libm.h ('K') | « fusl/src/math/ilogb.c ('k') | fusl/src/math/ilogbl.c » ('j') | no next file with comments »
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1 #include <limits.h> 1 #include <limits.h>
2 #include "libm.h" 2 #include "libm.h"
3 3
4 int ilogbf(float x) 4 int ilogbf(float x)
5 { 5 {
6 » #pragma STDC FENV_ACCESS ON 6 » PRAGMA_STDC_FENV_ACCESS_ON
7 union {float f; uint32_t i;} u = {x}; 7 union {float f; uint32_t i;} u = {x};
8 uint32_t i = u.i; 8 uint32_t i = u.i;
9 int e = i>>23 & 0xff; 9 int e = i>>23 & 0xff;
10 10
11 if (!e) { 11 if (!e) {
12 i <<= 9; 12 i <<= 9;
13 if (i == 0) { 13 if (i == 0) {
14 FORCE_EVAL(0/0.0f); 14 FORCE_EVAL(0/0.0f);
15 return FP_ILOGB0; 15 return FP_ILOGB0;
16 } 16 }
17 /* subnormal x */ 17 /* subnormal x */
18 for (e = -0x7f; i>>31 == 0; e--, i<<=1); 18 for (e = -0x7f; i>>31 == 0; e--, i<<=1);
19 return e; 19 return e;
20 } 20 }
21 if (e == 0xff) { 21 if (e == 0xff) {
22 FORCE_EVAL(0/0.0f); 22 FORCE_EVAL(0/0.0f);
23 return i<<9 ? FP_ILOGBNAN : INT_MAX; 23 return i<<9 ? FP_ILOGBNAN : INT_MAX;
24 } 24 }
25 return e - 0x7f; 25 return e - 0x7f;
26 } 26 }
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« fusl/src/internal/libm.h ('K') | « fusl/src/math/ilogb.c ('k') | fusl/src/math/ilogbl.c » ('j') | no next file with comments »

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