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f32_to_i32_r_minMag.c File Reference
#include <stdbool.h>
#include <stdint.h>
#include "platform.h"
#include "internals.h"
#include "specialize.h"
#include "softfloat.h"
Include dependency graph for f32_to_i32_r_minMag.c:

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Functions

int_fast32_t f32_to_i32_r_minMag (float32_t a, bool exact)
 

Function Documentation

◆ f32_to_i32_r_minMag()

int_fast32_t f32_to_i32_r_minMag ( float32_t a,
bool exact )

Definition at line 44 of file f32_to_i32_r_minMag.c.

45{
46 union ui32_f32 uA;
47 uint_fast32_t uiA;
48 int_fast16_t exp;
49 uint_fast32_t sig;
50 int_fast16_t shiftDist;
51 bool sign;
52 int_fast32_t absZ;
53
54 /*------------------------------------------------------------------------
55 *------------------------------------------------------------------------*/
56 uA.f = a;
57 uiA = uA.ui;
58 exp = expF32UI( uiA );
59 sig = fracF32UI( uiA );
60 /*------------------------------------------------------------------------
61 *------------------------------------------------------------------------*/
62 shiftDist = 0x9E - exp;
63 if ( 32 <= shiftDist ) {
64 if ( exact && (exp | sig) ) {
66 }
67 return 0;
68 }
69 /*------------------------------------------------------------------------
70 *------------------------------------------------------------------------*/
71 sign = signF32UI( uiA );
72 if ( shiftDist <= 0 ) {
73 if ( uiA == packToF32UI( 1, 0x9E, 0 ) ) return -0x7FFFFFFF - 1;
75 return
76 (exp == 0xFF) && sig ? i32_fromNaN
78 }
79 /*------------------------------------------------------------------------
80 *------------------------------------------------------------------------*/
81 sig = (sig | 0x00800000)<<8;
82 absZ = sig>>shiftDist;
83 if ( exact && ((uint_fast32_t) absZ<<shiftDist != sig) ) {
85 }
86 return sign ? -absZ : absZ;
87
88}
const GenericPointer< typename T::ValueType > T2 T::AllocatorType & a
Definition pointer.h:1181
void softfloat_raiseFlags(uint_fast8_t flags)
#define i32_fromNegOverflow
Definition specialize.h:58
#define i32_fromNaN
Definition specialize.h:59
#define i32_fromPosOverflow
Definition specialize.h:57
#define expF32UI(a)
Definition internals.h:105
#define fracF32UI(a)
Definition internals.h:106
#define signF32UI(a)
Definition internals.h:104
#define packToF32UI(sign, exp, sig)
Definition internals.h:107
@ softfloat_flag_invalid
Definition softfloat.h:89
@ softfloat_flag_inexact
Definition softfloat.h:85
THREAD_LOCAL uint_fast8_t softfloat_exceptionFlags
uint32_t uint_fast32_t
Definition stdint.h:156
int32_t int_fast32_t
Definition stdint.h:152
int16_t int_fast16_t
Definition stdint.h:151
float32_t f
Definition internals.h:46
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