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add nbsd_endian

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git-svn-id: http://svn2.nishi.boats/svn/milsko/trunk@551 b9cfdab3-6d41-4d17-bbe4-086880011989
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Nishi 2025-11-01 08:19:50 +00:00
commit 5981ab9f8f
7 changed files with 54 additions and 18 deletions
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36
src/math/nbsd_math.h
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@ -39,8 +39,13 @@ typedef union _ieee_double_shape_type {
do { \
ieee_double_shape_type ew_u; \
ew_u.value = (d); \
(ix0) = ew_u.parts.msw; \
(ix1) = ew_u.parts.lsw; \
if(nbsd_endian() == 'L') { \
(ix0) = ew_u.parts.msw; \
(ix1) = ew_u.parts.lsw; \
} else { \
(ix0) = ew_u.parts.lsw; \
(ix1) = ew_u.parts.msw; \
} \
} while(0)
/* Get the more significant 32-bit integer from a double. */
@ -49,7 +54,7 @@ typedef union _ieee_double_shape_type {
do { \
ieee_double_shape_type gh_u; \
gh_u.value = (d); \
(i) = gh_u.parts.msw; \
(i) = nbsd_endian() == 'L' ? gh_u.parts.msw : gh_u.parts.lsw; \
} while(0)
/* Get the less significant 32-bit integer from a double. */
@ -58,7 +63,7 @@ typedef union _ieee_double_shape_type {
do { \
ieee_double_shape_type gl_u; \
gl_u.value = (d); \
(i) = gl_u.parts.lsw; \
(i) = nbsd_endian() == 'L' ? gl_u.parts.lsw : gl_u.parts.msw; \
} while(0)
/* Set the more significant 32 bits of a double from an integer. */
@ -66,9 +71,13 @@ typedef union _ieee_double_shape_type {
#define SET_HIGH_WORD(d, v) \
do { \
ieee_double_shape_type sh_u; \
sh_u.value = (d); \
sh_u.parts.msw = (v); \
(d) = sh_u.value; \
sh_u.value = (d); \
if(nbsd_endian() == 'L') { \
sh_u.parts.msw = (v); \
} else { \
sh_u.parts.lsw = (v); \
} \
(d) = sh_u.value; \
} while(0)
/* Set the less significant 32 bits of a double from an integer. */
@ -76,9 +85,16 @@ typedef union _ieee_double_shape_type {
#define SET_LOW_WORD(d, v) \
do { \
ieee_double_shape_type sl_u; \
sl_u.value = (d); \
sl_u.parts.lsw = (v); \
(d) = sl_u.value; \
sl_u.value = (d); \
if(nbsd_endian() == 'L') { \
sl_u.parts.lsw = (v); \
} else { \
sl_u.parts.msw = (v); \
} \
(d) = sl_u.value; \
} while(0)
double nbsd_pow(double a, double b);
char nbsd_endian(void);
#endif