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-rw-r--r--compiler-rt/lib/builtins/floatsisf.c77
1 files changed, 38 insertions, 39 deletions
diff --git a/compiler-rt/lib/builtins/floatsisf.c b/compiler-rt/lib/builtins/floatsisf.c
index dbdaecc4296..766551c01cc 100644
--- a/compiler-rt/lib/builtins/floatsisf.c
+++ b/compiler-rt/lib/builtins/floatsisf.c
@@ -17,49 +17,48 @@
#include "int_lib.h"
-COMPILER_RT_ABI fp_t
-__floatsisf(int a) {
-
- const int aWidth = sizeof a * CHAR_BIT;
-
- // Handle zero as a special case to protect clz
- if (a == 0)
- return fromRep(0);
-
- // All other cases begin by extracting the sign and absolute value of a
- rep_t sign = 0;
- if (a < 0) {
- sign = signBit;
- a = -a;
- }
-
- // Exponent of (fp_t)a is the width of abs(a).
- const int exponent = (aWidth - 1) - __builtin_clz(a);
- rep_t result;
-
- // Shift a into the significand field, rounding if it is a right-shift
- if (exponent <= significandBits) {
- const int shift = significandBits - exponent;
- result = (rep_t)a << shift ^ implicitBit;
- } else {
- const int shift = exponent - significandBits;
- result = (rep_t)a >> shift ^ implicitBit;
- rep_t round = (rep_t)a << (typeWidth - shift);
- if (round > signBit) result++;
- if (round == signBit) result += result & 1;
- }
-
- // Insert the exponent
- result += (rep_t)(exponent + exponentBias) << significandBits;
- // Insert the sign bit and return
- return fromRep(result | sign);
+COMPILER_RT_ABI fp_t __floatsisf(int a) {
+
+ const int aWidth = sizeof a * CHAR_BIT;
+
+ // Handle zero as a special case to protect clz
+ if (a == 0)
+ return fromRep(0);
+
+ // All other cases begin by extracting the sign and absolute value of a
+ rep_t sign = 0;
+ if (a < 0) {
+ sign = signBit;
+ a = -a;
+ }
+
+ // Exponent of (fp_t)a is the width of abs(a).
+ const int exponent = (aWidth - 1) - __builtin_clz(a);
+ rep_t result;
+
+ // Shift a into the significand field, rounding if it is a right-shift
+ if (exponent <= significandBits) {
+ const int shift = significandBits - exponent;
+ result = (rep_t)a << shift ^ implicitBit;
+ } else {
+ const int shift = exponent - significandBits;
+ result = (rep_t)a >> shift ^ implicitBit;
+ rep_t round = (rep_t)a << (typeWidth - shift);
+ if (round > signBit)
+ result++;
+ if (round == signBit)
+ result += result & 1;
+ }
+
+ // Insert the exponent
+ result += (rep_t)(exponent + exponentBias) << significandBits;
+ // Insert the sign bit and return
+ return fromRep(result | sign);
}
#if defined(__ARM_EABI__)
#if defined(COMPILER_RT_ARMHF_TARGET)
-AEABI_RTABI fp_t __aeabi_i2f(int a) {
- return __floatsisf(a);
-}
+AEABI_RTABI fp_t __aeabi_i2f(int a) { return __floatsisf(a); }
#else
AEABI_RTABI fp_t __aeabi_i2f(int a) COMPILER_RT_ALIAS(__floatsisf);
#endif
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