提交 f321de9e 编写于 作者: R Rich Felker

floating point environment/exceptions support for mips

上级 97c8bdd8
#define FE_ALL_EXCEPT 0 #define FE_INEXACT 4
#define FE_UNDERFLOW 8
#define FE_OVERFLOW 16
#define FE_DIVBYZERO 32
#define FE_INVALID 64
#define FE_ALL_EXCEPT 124
#define FE_TONEAREST 0 #define FE_TONEAREST 0
#define FE_TOWARDZERO 1
#define FE_UPWARD 2
#define FE_DOWNWARD 3
typedef unsigned long fexcept_t; typedef unsigned short fexcept_t;
typedef struct { typedef struct {
unsigned long __cw; unsigned __cw;
} fenv_t; } fenv_t;
#define FE_DFL_ENV ((const fenv_t *) -1) #define FE_DFL_ENV ((const fenv_t *) -1)
.set noreorder
.global feclearexcept
.type feclearexcept,@function
feclearexcept:
cfc1 $5, $31
or $5, $5, $4
xor $5, $5, $4
ctc1 $5, $31
jr $ra
li $2, 0
.global feraiseexcept
.type feraiseexcept,@function
feraiseexcept:
cfc1 $5, $31
or $5, $5, $4
ctc1 $5, $31
jr $ra
li $2, 0
.global fetestexcept
.type fetestexcept,@function
fetestexcept:
cfc1 $2, $31
jr $ra
and $2, $2, $4
.global fegetround
.type fegetround,@function
fegetround:
cfc1 $2, $31
jr $ra
andi $2, $2, 3
.global fesetround
.type fesetround,@function
fesetround:
cfc1 $5, $31
li $6, -4
and $5, $5, $6
or $5, $5, $4
jr $ra
li $2, 0
.global fegetenv
.type fegetenv,@function
fegetenv:
cfc1 $5, $31
sw $5, 0($4)
jr $ra
li $2, 0
.global fesetenv
.type fesetenv,@function
fesetenv:
lw $5, 0($4)
ctc1 $5, $31
jr $ra
li $2, 0
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