[sim] renamed to riscv-isa-run

[riscv-isa-sim.git] / softfloat / f64_div.c

diff --git a/softfloat/f64_div.c b/softfloat/f64_div.c
deleted file mode 100755 (executable)
index 9bc72b3..0000000
--- a/softfloat/f64_div.c
+++ /dev/null
@@ -1,104 +0,0 @@
-
-#include <stdbool.h>
-#include <stdint.h>
-#include "platform.h"
-#include "primitives.h"
-#include "internals.h"
-#include "specialize.h"
-#include "softfloat.h"
-
-float64_t f64_div( float64_t a, float64_t b )
-{
-    union ui64_f64 uA;
-    uint_fast64_t uiA;
-    bool signA;
-    int_fast16_t expA;
-    uint_fast64_t sigA;
-    union ui64_f64 uB;
-    uint_fast64_t uiB;
-    bool signB;
-    int_fast16_t expB;
-    uint_fast64_t sigB;
-    bool signZ;
-    struct exp16_sig64 normExpSig;
-    int_fast16_t expZ;
-    uint_fast64_t sigZ;
-    struct uint128 term, rem;
-    uint_fast64_t uiZ;
-    union ui64_f64 uZ;
-
-    uA.f = a;
-    uiA = uA.ui;
-    signA = signF64UI( uiA );
-    expA = expF64UI( uiA );
-    sigA = fracF64UI( uiA );
-    uB.f = b;
-    uiB = uB.ui;
-    signB = signF64UI( uiB );
-    expB = expF64UI( uiB );
-    sigB = fracF64UI( uiB );
-    signZ = signA ^ signB;
-    if ( expA == 0x7FF ) {
-        if ( sigA ) goto propagateNaN;
-        if ( expB == 0x7FF ) {
-            if ( sigB ) goto propagateNaN;
-            goto invalid;
-        }
-        goto infinity;
-    }
-    if ( expB == 0x7FF ) {
-        if ( sigB ) goto propagateNaN;
-        goto zero;
-    }
-    if ( ! expB ) {
-        if ( ! sigB ) {
-            if ( ! ( expA | sigA ) ) goto invalid;
-            softfloat_raiseFlags( softfloat_flag_infinity );
-            goto infinity;
-        }
-        normExpSig = softfloat_normSubnormalF64Sig( sigB );
-        expB = normExpSig.exp;
-        sigB = normExpSig.sig;
-    }
-    if ( ! expA ) {
-        if ( ! sigA ) goto zero;
-        normExpSig = softfloat_normSubnormalF64Sig( sigA );
-        expA = normExpSig.exp;
-        sigA = normExpSig.sig;
-    }
-    expZ = expA - expB + 0x3FD;
-    sigA = ( sigA | UINT64_C( 0x0010000000000000 ) )<<10;
-    sigB = ( sigB | UINT64_C( 0x0010000000000000 ) )<<11;
-    if ( sigB <= ( sigA + sigA ) ) {
-        ++expZ;
-        sigA >>= 1;
-    }
-    sigZ = softfloat_estimateDiv128To64( sigA, 0, sigB );
-    if ( ( sigZ & 0x1FF ) <= 2 ) {
-        term = softfloat_mul64To128( sigB, sigZ );
-        rem = softfloat_sub128( sigA, 0, term.v64, term.v0 );
-        while ( UINT64_C( 0x8000000000000000 ) <= rem.v64 ) {
-            --sigZ;
-            rem = softfloat_add128( rem.v64, rem.v0, 0, sigB );
-        }
-        sigZ |= ( rem.v0 != 0 );
-    }
-    return softfloat_roundPackToF64( signZ, expZ, sigZ );
- propagateNaN:
-    uiZ = softfloat_propagateNaNF64UI( uiA, uiB );
-    goto uiZ;
- invalid:
-    softfloat_raiseFlags( softfloat_flag_invalid );
-    uiZ = defaultNaNF64UI;
-    goto uiZ;
- infinity:
-    uiZ = packToF64UI( signZ, 0x7FF, 0 );
-    goto uiZ;
- zero:
-    uiZ = packToF64UI( signZ, 0, 0 );
- uiZ:
-    uZ.ui = uiZ;
-    return uZ.f;
-
-}
-