scoutos / prex-0.9.0 / bsp / drv / lib / endian.c @ 03e9c04a
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| 1 | 03e9c04a | Brad Neuman | /*
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| 2 | * Written by J.T. Conklin <jtc@NetBSD.org>.
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| 3 | * Public domain.
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| 4 | */
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| 5 | |||
| 6 | #include <driver.h> |
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| 7 | #include <sys/types.h> |
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| 8 | #include <sys/endian.h> |
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| 9 | |||
| 10 | #undef htonl
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| 11 | #undef htons
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| 12 | #undef ntohl
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| 13 | #undef ntohs
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| 14 | |||
| 15 | #if BYTE_ORDER == LITTLE_ENDIAN
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| 16 | uint32_t |
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| 17 | htonl(uint32_t x) |
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| 18 | {
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| 19 | |||
| 20 | u_char *s = (u_char *)&x; |
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| 21 | return (uint32_t)(s[0] << 24 | s[1] << 16 | s[2] << 8 | s[3]); |
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| 22 | } |
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| 23 | |||
| 24 | uint16_t |
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| 25 | htons(uint16_t x) |
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| 26 | {
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| 27 | |||
| 28 | u_char *s = (u_char *) &x; |
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| 29 | return (uint16_t)(s[0] << 8 | s[1]); |
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| 30 | } |
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| 31 | |||
| 32 | uint32_t |
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| 33 | ntohl(uint32_t x) |
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| 34 | {
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| 35 | |||
| 36 | u_char *s = (u_char *)&x; |
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| 37 | return (uint32_t)(s[0] << 24 | s[1] << 16 | s[2] << 8 | s[3]); |
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| 38 | } |
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| 39 | |||
| 40 | uint16_t |
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| 41 | ntohs(uint16_t x) |
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| 42 | {
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| 43 | |||
| 44 | u_char *s = (u_char *) &x; |
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| 45 | return (uint16_t)(s[0] << 8 | s[1]); |
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| 46 | } |
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| 47 | #endif |