1 #include "softfloat_ext.hpp"
2 #include "zigendian.h"
3
4 extern "C" {
5 #include "softfloat.h"
6 }
7
f128M_abs(const float128_t * aPtr,float128_t * zPtr)8 void f128M_abs(const float128_t *aPtr, float128_t *zPtr) {
9 // Clear the sign bit.
10 #if ZIG_BYTE_ORDER == ZIG_LITTLE_ENDIAN
11 zPtr->v[1] = aPtr->v[1] & ~(UINT64_C(1) << 63);
12 zPtr->v[0] = aPtr->v[0];
13 #elif ZIG_BYTE_ORDER == ZIG_BIG_ENDIAN
14 zPtr->v[0] = aPtr->v[0] & ~(UINT64_C(1) << 63);
15 zPtr->v[1] = aPtr->v[1];
16 #else
17 #error Unsupported endian
18 #endif
19 }
20
f128M_trunc(const float128_t * aPtr,float128_t * zPtr)21 void f128M_trunc(const float128_t *aPtr, float128_t *zPtr) {
22 float128_t zero_float;
23 ui32_to_f128M(0, &zero_float);
24 if (f128M_lt(aPtr, &zero_float)) {
25 f128M_roundToInt(aPtr, softfloat_round_max, false, zPtr);
26 } else {
27 f128M_roundToInt(aPtr, softfloat_round_min, false, zPtr);
28 }
29 }
30
f16_neg(const float16_t a)31 float16_t f16_neg(const float16_t a) {
32 union { uint16_t ui; float16_t f; } uA;
33 // Toggle the sign bit.
34 uA.ui = a.v ^ (UINT16_C(1) << 15);
35 return uA.f;
36 }
37
f128M_neg(const float128_t * aPtr,float128_t * zPtr)38 void f128M_neg(const float128_t *aPtr, float128_t *zPtr) {
39 // Toggle the sign bit.
40 #if ZIG_BYTE_ORDER == ZIG_LITTLE_ENDIAN
41 zPtr->v[1] = aPtr->v[1] ^ (UINT64_C(1) << 63);
42 zPtr->v[0] = aPtr->v[0];
43 #elif ZIG_BYTE_ORDER == ZIG_BIG_ENDIAN
44 zPtr->v[0] = aPtr->v[0] ^ (UINT64_C(1) << 63);
45 zPtr->v[1] = aPtr->v[1];
46 #else
47 #error Unsupported endian
48 #endif
49 }