strtorx.c File Reference

#include "gdtoaimp.h"

Include dependency graph for strtorx.c:

Go to the source code of this file.

Functions
void	ULtox (UShort *L, const ULong *bits, Long exp, int k)
int	strtorx (CONST char *s, char **sp, int rounding, void *L)

Function Documentation

strtorx()

int strtorx	(	CONST char *	s,
		char **	sp,
		int	rounding,
		void *	L
	)

Definition at line 112 of file strtorx.c.

{
    static FPI fpi0 = {64, 1 - 16383 - 64 + 1, 32766 - 16383 - 64 + 1, 1, SI};
    FPI *fpi, fpi1;
    ULong bits[2];
    Long exp;
    int k;

    fpi = &fpi0;
    if(rounding != FPI_Round_near)
    {
        fpi1 = fpi0;
        fpi1.rounding = rounding;
        fpi = &fpi1;
    }
    k = strtodg(s, sp, fpi, &exp, bits);
    ULtox((UShort*)L, bits, exp, k);
    return k;
}

References fpi1, FPI_Round_near, Long, SI, strtodg(), and ULtox().

ULtox()

void ULtox	(	UShort *	L,
		const ULong *	bits,
		Long	exp,
		int	k
	)

Definition at line 61 of file strtorx.c.

{
    switch(k & STRTOG_Retmask)
    {
        case STRTOG_NoNumber:
        case STRTOG_Zero:
            L[0] = L[1] = L[2] = L[3] = L[4] = 0;
            break;

        case STRTOG_Denormal:
            L[_0] = 0;
            goto normal_bits;

        case STRTOG_Normal:
        case STRTOG_NaNbits:
            L[_0] = (UShort)(exp + 0x3fff + 63);
        normal_bits:
            L[_4] = (UShort)bits[0];
            L[_3] = (UShort)(bits[0] >> 16);
            L[_2] = (UShort)bits[1];
            L[_1] = (UShort)(bits[1] >> 16);
            break;

        case STRTOG_Infinite:
            L[_0] = 0x7fff;
            L[_1] = L[_2] = L[_3] = L[_4] = 0;
            break;

        case STRTOG_NaN:
            L[0] = ldus_QNAN0;
            L[1] = ldus_QNAN1;
            L[2] = ldus_QNAN2;
            L[3] = ldus_QNAN3;
            L[4] = ldus_QNAN4;
    }
    if(k & STRTOG_Neg)
    {
        {
            L[_0] |= 0x8000;
        }
    }
}

References STRTOG_Denormal, STRTOG_Infinite, STRTOG_NaN, STRTOG_NaNbits, STRTOG_Neg, STRTOG_NoNumber, STRTOG_Normal, STRTOG_Retmask, and STRTOG_Zero.

Referenced by strtoIx(), and strtorx().