strtorf.c File Reference

#include "gdtoaimp.h"

Include dependency graph for strtorf.c:

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Functions
void	ULtof (ULong *L, const ULong *bits, Long exp, int k)
int	strtorf (CONST char *s, char **sp, int rounding, float *f)

Function Documentation

strtorf()

int strtorf	(	CONST char *	s,
		char **	sp,
		int	rounding,
		float *	f
	)

Definition at line 82 of file strtorf.c.

{
    static FPI fpi0 = {24, 1 - 127 - 24 + 1, 254 - 127 - 24 + 1, 1, SI};
    FPI *fpi, fpi1;
    ULong bits[1];
    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);
    ULtof((ULong*)f, bits, exp, k);
    return k;
}

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

ULtof()

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

Definition at line 41 of file strtorf.c.

{
    switch(k & STRTOG_Retmask)
    {
        case STRTOG_NoNumber:
        case STRTOG_Zero:
            *L = 0;
            break;

        case STRTOG_Normal:
        case STRTOG_NaNbits:
            L[0] = (bits[0] & 0x7fffff) | (unsigned)((exp + 0x7f + 23) << 23);
            break;

        case STRTOG_Denormal:
            L[0] = bits[0];
            break;

        case STRTOG_Infinite:
            L[0] = 0x7f800000;
            break;

        case STRTOG_NaN:
            L[0] = f_QNAN;
    }
    if(k & STRTOG_Neg)
    {
        {
            L[0] |= 0x80000000L;
        }
    }
}

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

Referenced by strtoIf(), and strtorf().