Merge pull request numpy#17780 from kraj/rv32

ENH, BLD: Define RISCV-32 support

Author: mattip

numpy/_core/include/numpy/npy_cpu.h

@@ -18,6 +18,7 @@
  *              NPY_CPU_ARCEL
  *              NPY_CPU_ARCEB
  *              NPY_CPU_RISCV64
+ *              NPY_CPU_RISCV32
  *              NPY_CPU_LOONGARCH
  *              NPY_CPU_WASM
  */
@@ -102,8 +103,12 @@
     #define NPY_CPU_ARCEL
 #elif defined(__arc__) && defined(__BIG_ENDIAN__)
     #define NPY_CPU_ARCEB
-#elif defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 64
-    #define NPY_CPU_RISCV64
+#elif defined(__riscv)
+    #if __riscv_xlen == 64
+	#define NPY_CPU_RISCV64
+    #elif __riscv_xlen == 32
+	#define NPY_CPU_RISCV32
+    #endif
 #elif defined(__loongarch__)
     #define NPY_CPU_LOONGARCH
 #elif defined(__EMSCRIPTEN__)

numpy/_core/include/numpy/npy_endian.h

@@ -49,6 +49,7 @@
             || defined(NPY_CPU_PPC64LE)       \
             || defined(NPY_CPU_ARCEL)         \
             || defined(NPY_CPU_RISCV64)       \
+            || defined(NPY_CPU_RISCV32)       \
             || defined(NPY_CPU_LOONGARCH)     \
             || defined(NPY_CPU_WASM)
         #define NPY_BYTE_ORDER NPY_LITTLE_ENDIAN