Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30549-267e77144f) Lines: 1467 1530 95.9 % Date: 2025-11-16 09:22:34 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15273
_sqrtnr	22708
polrootsbound_i	27291
polrootsbound	27297
RgX_normalize1	35899
ZX_realroots_irred	48651
realroots	50627
ZX_sturm_irred	116773
ZX_sturm_i	123168
polsolve	166724
split_pols	166724
splitcauchy	166727
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267057
QX_complex_roots	296414
_gen_zero	326139
fix_roots1	398463
conformal_mapping	467931
split_1	467931
split_0_1	468296
split_0_2	468296
logradius	493980
split_2	493984
optimize_split	493985
parameters	493985
split_fromU	493985
update_radius	493985
split_0	494345
refine_F	502369
dft	502372
all_roots	536116
clean_roots	536169
fix_roots	537217
a_posteriori_errors	537226
mygprec_special	537229
logmodulus	606760
logpre_modulus	606762
abs_update_r	778659
ind_maxlog2	902674
isexactscalar	931714
isreal	961916
initdft	996358
dual_modulus	1012460
usp	1126087
ZX_sturmpart	1128294
check_ab	1178921
tocomplex	1213970
isvalidcoeff	1230220
ZX_Uspensky	1313938
conformal_basecase	1403904
conformal_pol	1404023
fujiwara_bound_real	1406963
split_complete	1525911
homothetie	1610103
append_clone	1614181
logmin_modulus	1614838
root_error	1912587
mygprecrc_special	2179187
ZX_rescale2prim	2233821
cmp_complex_appr	2238566
fujiwara_bound	2271812
checkbound	2354972
refine_H	2460530
scalepol	4289480
mygprec_absolute	4340025
_mp_mul	4374480
logmax_modulus	4451018
bkeval_single_power	5235745
splitpoleval	5235927
newton_polygon	5507224
X2XP1	5990519
_mp_sqr	6298183
dblexp	6549178
quicktofp	6979139
RgX_gtofp_bit	7031634
abs_update	8005372
mydbllogr	9546936
homothetie2n	9957938
_gen_nored	11201539
eval_rel_pol	13138334
fft	14159326
_gen_one	14471745
ZX_to_ZiX	16459699
pol_to_gaussint	17589321
_mp_add	24659240
_mp_cmul	34762615
myshiftrc	35507914
homothetie_gauss	36499035
lower_bound	40957652
findpower	40959624
graeffe	49509818
mydbllog2r	56183888
mygprec	63761144
ZiX_sqr	99042071
myshiftic	135830488
mygprecrc	215205185
mydbllog2i	226445703
dbllog2	302121816

Generated by: LCOV version 1.16